Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01eb49204384407…

MALICIOUS

PDF

76.2 KB Created: 2021-03-11 17:39:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0388625c46ba1993f186a26a283574aa SHA-1: ba92704fd1e14bc2d4cb303d280bcc3af6e7837a SHA-256: e01eb49204384407f7763f15c38bdc7757240074b0d34f02a4472f2c819e46f0
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/123?utm_term=sarvottam+mongolo+radhe+binodini+rai+song PDF link annotation
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/40c184e4d10ce9.pdfIn PDF document text
    • https://lewobagapu.weebly.com/uploads/1/3/4/6/134666085/3830088.pdfIn PDF document text
    • http://pevewoxoxup.scienceontheweb.net/51641697540.pdfIn PDF document text
    • https://vedaputenada.weebly.com/uploads/1/3/5/3/135318287/09e520cb12a.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/literal_inferential_and_critical_comprehension_reading.pdfIn PDF document text
    • http://mopexaxurip.getenjoyment.net/am_child_of_god_song_download.pdfIn PDF document text
    • https://xuvajova.weebly.com/uploads/1/3/1/3/131380845/zamunadip.pdfIn PDF document text
    • https://totakolexab.weebly.com/uploads/1/3/5/3/135391630/fezekonogixirod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7e005a1c-fb68-43c1-af83-b854b6a2d282.filesusr.com/ugd/dcfb95_8caceb65764e44268eb7fc19e499ba9f.pdf?index=trueIn PDF document text
    • http://nozozuwovore.atwebpages.com/maytag_quiet_series_200_parts_canada.pdfIn PDF document text
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_e9e5600ab58741b3b8d0963d13b5d776.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/96eb9ad3-bac1-461d-beed-d9b472b201a4/whats_the_difference_between_riffs_and_lick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5495134-ebae-4d3b-a519-1a3bf83c844c/vuferofugut.pdfIn PDF document text
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_f71d1ba85d7840e4ab21d93a5eb06418.pdf?index=trueIn PDF document text
    • http://nakeviw.myartsonline.com/94858471228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74349eb-5349-47ae-9026-6d3c7cb2fc80/97246183896.pdfIn PDF document text
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_f4717c6511d9499ba9debc5badff7b7e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e8e21b-c846-49f4-8926-1fb201dc2082/kapamipimixibave.pdfIn PDF document text
    • https://6478d21b-237c-41b5-add8-96d7b9819624.filesusr.com/ugd/c7ef1a_a8ae5ba2d9424657a1cf64aeb0fb3017.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d0434c0-9598-42f9-86cc-0107201f88c7/how_to_change_fuel_filter_25_hp_mercury.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd78c706-03ed-4ca0-9dbc-b3ba5ef46cdf/the_white_princess_season_1_episode_8_watch_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/460f3682-8974-4b13-97ec-939e60d9add5/61593630270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c022f72e-388d-4ef7-a92d-23c5a3fd4085/owen_meany_chapter_7_summary.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD303 5544 bytes
SHA-256: 4694b00d28ad2e4df1166a5685ec1e7be2470b24fb637be6056184e1fc3e7bb6
font_01_sfnt_off0000e5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A7 8252 bytes
SHA-256: b8c7393a0289af9a75723fe5d4d7c05346ed4b3714e407fe3b3a55a41c4bf023
font_02_sfnt_off0000ff6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6C 10368 bytes
SHA-256: 78f92da68acdeed77643e9a933c7403b91260c32f820fae667d3e85fc6c942a9