Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b812e9f1d7d4daf…

MALICIOUS

PDF

77.4 KB Created: 2021-05-27 18:24:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2f010287933ec1368f3b14c6d645f013 SHA-1: e0d7fad70d92e59eb4daf8ad1908dfddbde84e93 SHA-256: 6b812e9f1d7d4daf37c015063314fa98c4f8018b925fb43d21a011fc1194a9bd
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, flagged as a "PDF_SEO_LINK_FARM", suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL identified is dugedepap.ru, which is likely used to host or redirect to malicious payloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • 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://dugedepap.ru/strik?utm_term=pakistan+law+dictionary+free+download+pdf PDF link annotation
    • https://rixolojujosu.weebly.com/uploads/1/3/4/6/134622111/30e3c25efd178.pdfIn PDF document text
    • https://xoxatazafej.weebly.com/uploads/1/3/4/8/134861408/67bd9fbec4c59e9.pdfIn PDF document text
    • https://sudigosapo.weebly.com/uploads/1/3/4/4/134456465/74d3be7e47107.pdfIn PDF document text
    • https://waguwejulunesu.weebly.com/uploads/1/3/5/3/135301122/zitipisunan.pdfIn PDF document text
    • https://sefadibewotova.weebly.com/uploads/1/3/4/0/134018483/loxexosi-mexadaveni-domesereza.pdfIn PDF document text
    • https://lurusavi.weebly.com/uploads/1/3/2/7/132710630/41090.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/15493412-c480-439e-b419-84741339247c/morgan_g._2006._images_of_organization._thousand_oaks_ca_sage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c43a89a-5bfd-40ad-8960-b806c5e2b371/lmms_manual_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d5d1a5-6167-4164-a9ee-d276897ce205/18734082531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d32ffec-8215-4222-8e07-d56e468732af/how_to_pass_driving_test_georgia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/112c74cb-995b-4ae9-86b1-2e28e7b73e14/wukulaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e03f9a0c-1796-4797-b554-1229ea403ae8/how_to_connect_subwoofer_to_soundbar_vizio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/970a3256-298c-4fb1-9908-9c2093377237/computer_hardware_is_best_described_as.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fca2e5a9-a3f1-49d1-b935-46d2e779dbfe/wowopixisatepekijidagenun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87955d7a-3e16-4dd0-b9dd-687b785d96ef/65396349556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5268c0e-5cc3-4389-8aff-842d225cc66a/nufejuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56d90742-e7a8-4254-82ff-03d8b6dbc5b8/mokixozexiduwokezaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9a0bdfc-1d5f-48c5-a8aa-bbe2b1b0ce54/persepolis_full_movie_english_subtitles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f67e10bf-361c-4241-893b-ee07602c72b6/dolores_cannon_between_death_and_life_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/023605da-8c58-429d-bca6-578c1b40fa6e/gozozizofexogerapema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29012dc1-d5b4-46f2-bc80-060febe764ef/64389245174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b7d8325-25c9-4d46-92b1-a21ab5dcee8a/89674785265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ff6c7b2-03fb-4115-bb37-90ee3d0034a1/gibson_j._j._1979._the_ecological_approach_to_visual_perception._boston_houghton_mifflin.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f04f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04F 5408 bytes
SHA-256: 53bb35d5db5015b4bc6cbddb04d0712051f53f986f115699f721dc23563a34aa
font_01_sfnt_off000102e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E3 10780 bytes
SHA-256: 29922e87dd5385ab389406f8807854928ac32dd2d96c1b269062f3ba962f9c0a