Malicious PDF — malware analysis report

Static analysis result for SHA-256 8875579321a9242c…

MALICIOUS

PDF

135.0 KB Created: 2021-05-21 20:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 863dd2332568bcdbf11aaa083f45fa8d SHA-1: db3a15ee66c93ead54585f245d549d2efd36220b SHA-256: 8875579321a9242c52b91eae3d8ead83f20924c77b2c74d9db231c96d08c30ca
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO spam operation. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports its malicious nature. The embedded content suggests a lure related to popular movie titles to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9765

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://static.s123-cdn-static.com/uploads/4368736/normal_5fe2c7f491439.pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4407084/normal_5fc7353703fcc.pdfIn PDF document text
    • https://mosugomepa.weebly.com/uploads/1/3/4/0/134096926/virupifuxawud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457881/normal_600f322d624ac.pdfIn PDF document text
    • https://fojigexo.weebly.com/uploads/1/3/4/2/134235048/rapeterawiva-jejebuwan-zilor-vimaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418383/normal_602b06d09000d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424024/normal_604d9db77b122.pdfIn PDF document text
    • https://ledajesaler.weebly.com/uploads/1/3/4/0/134041179/jigujugilawapu-xurigutumulinej.pdfIn PDF document text
    • https://mupexopuwes.weebly.com/uploads/1/3/4/7/134722910/462bb0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/Ecv9gJ3Ok6E/wb?keyword=the%20hunger%20games%20mockingjay%20part%201%20in%20hindi%20filmyzillaPDF link annotation
    • https://uploads.strikinglycdn.com/files/4cdb7a99-44ef-4eac-a7d2-a2028e3f46dd/91132445246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c40a3a84-1ff5-4877-8e67-1c0334958861/washing_machine_repair_parts_maytag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25adb25a-e1d5-4b26-a806-6874c10d679b/best_garage_door_opener_with_wifi_and_battery_backup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c7a573-1bd6-4a73-bdf2-aa978e0179df/what_are_native_american_symbols_called.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/502c1d01-165d-4515-8ea0-00cd805bdf86/amazon_presto_profry_deep_fryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9509d61a-3b98-4831-ba1e-65649f56442b/fofasuto.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/fojuzediz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97680149-1605-43e5-9f61-4531868a7dc4/ca_full_form_in_police_department.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/097e6b21-dc16-4079-bd26-70cdfdae2921/chicas_de_alambre_libro_resumen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ba4c99a-f085-4975-813f-573891856ee1/gufufema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10c05abb-26ca-40b3-94b8-ae2e8f7d415c/kudizawudidogoraboxelejat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d44082e-0797-4f55-8bdd-2b02d921e63b/varileruwikobisevonilutis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52b1e2ab-2c49-4fbb-8ecd-66bad95d1d4f/how_to_draw_a_rose_realistic_but_easy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec135231-03f7-4077-bf9f-009419137297/topifafeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d1a58a-62a3-4c3b-b40f-f316b326d03d/how_to_solve_the_quadratic_inequality.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af35dcd8-0ee6-4f64-9615-f56ab80fd4d6/40756957618.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/nebutasujolupan.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F93 6744 bytes
SHA-256: 127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b
font_01_sfnt_off0001b07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B07A 5744 bytes
SHA-256: 946e5e8eedc51fb6399364df327a83cc6d557f2ead05c9ba3bd6c9c19d634d02
font_02_sfnt_off0001c3e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C3E8 4244 bytes
SHA-256: 57633a19aae9672db7988069d42f87b0a7e1c7964fc441206ceb2234a75f7654
font_03_sfnt_off0001d4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D4AA 12720 bytes
SHA-256: 3296f0d918aa1ac2b792f6d6e7d5ca5e574e1bfc5d0d5f6a4b1a313b1f0eaf59
font_04_sfnt_off0001fe00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FE00 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176