Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04cc9678e73333d…

MALICIOUS

PDF

80.3 KB Created: 2021-03-11 03:44:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 16a8c4272a8d319195b195095d85c4a7 SHA-1: 5fab1817e6d745bd368e5dd6d48e0c1c8fa8c67a SHA-256: f04cc9678e73333d399c66cda6eabbd8ccefdff06d2652f33ff4a7f07b37d108
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=unblocked+pool+games+2+player PDF link annotation
    • https://gijowazav.weebly.com/uploads/1/3/4/0/134097260/b35299800b5.pdfIn PDF document text
    • http://ontrade.top/99743520467ka1eh.pdfIn PDF document text
    • https://jikumudepopojet.weebly.com/uploads/1/3/1/4/131453433/4a6eee3.pdfIn PDF document text
    • http://organize.shop/zexupalotilibusoridoany2l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407997/normal_5ff971a093dab.pdfIn PDF document text
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/33f91eb363fa07e.pdfIn PDF document text
    • http://klokisik.space/mechwarrior_4_mercenaries_mektek_37mfcn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_6028e4851bcad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477408/normal_602407f8e9000.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fomepufasele.atwebpages.com/best_order_to_read_kurt_vonnegut_books.pdfIn PDF document text
    • https://f733e552-90a1-4d1f-83ca-a6b36afcf31c.filesusr.com/ugd/38bf1f_ec0be7f5e4fe46938551f73a6bc13580.pdf?index=trueIn PDF document text
    • https://44f68060-d5e3-4d58-b4e7-e3760392f352.filesusr.com/ugd/49488e_b738682e0b98424d8396db55d3d1abad.pdf?index=trueIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_8c5392b072494932a454e0b5e2b6fef1.pdf?index=trueIn PDF document text
    • http://tososite.onlinewebshop.net/43504546587.pdfIn PDF document text
    • https://0f0532cb-4478-41f9-91a1-cf277c4732ec.filesusr.com/ugd/8acad3_62588eba808841369a6c96a000ae3c7e.pdf?index=trueIn PDF document text
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_a5c1dc68d829428ebb07d220bf52f0a8.pdf?index=trueIn PDF document text
    • https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_d0bef47c03044c8b8fb277ab51374fb9.pdf?index=trueIn PDF document text
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_72f4fec1db0a4ceab4d7a125994ab427.pdf?index=trueIn PDF document text
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_f5f8ec994fdf41888b933194a98a3eb5.pdf?index=trueIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_7c071a92a5e64e9abe4c9d52e34d7c34.pdf?index=trueIn 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_off0000fcc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC7 5820 bytes
SHA-256: b963eeb560f922ae588d229ee9caf424dade31eaab9281c80b1acb13eff0bd28
font_01_sfnt_off0001108b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108B 10252 bytes
SHA-256: 8353b27e69d7b738877934e95a090cef22f603f18bd0b554d77a7071a4d0a62b

Open this report in the interactive analyzer, or submit your own file for analysis.