Malicious PDF — malware analysis report

Static analysis result for SHA-256 be266096928e8bc0…

MALICIOUS

PDF

79.0 KB Created: 2021-03-23 07:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eaa6a4a30b3ded8fd64dc6a557efdf7d SHA-1: 861f061a0fe4987436ccf2e4176a538343eb438f SHA-256: be266096928e8bc00892b8c447a09cc4a0adafdb668c80e58a230b7828c7ff6b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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 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://resalured.ru/123?utm_term=food+handling+exam+answers PDF link annotation
    • http://myyshooop224.site/download_the_outsiders_booktsehm.pdfIn PDF document text
    • https://cdn.sqhk.co/fapiwejagiz/ahhiaoh/4190545479.pdfIn PDF document text
    • https://wufopuse.weebly.com/uploads/1/3/5/3/135300065/paburukag-mekotilexef-suwaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393925/normal_5fd634052296d.pdfIn PDF document text
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/babomosumesasawixusu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_603bcac0d37b7.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/eAZt5he/zituxiditun.pdfIn PDF document text
    • http://nubigawe.22web.org/baumer_og73_un_1024_datasheet.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/ghjgihh/44278195479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_600c9be30b5cd.pdfIn PDF document text
    • http://mosquito.codes/xurapovawevalegidap7wvb.pdfIn PDF document text
    • http://zuvowizetigeko.22web.org/what_is_a_direct_drive_scroll_saw.pdfIn PDF document text
    • https://rofujerejikuf.weebly.com/uploads/1/3/5/3/135388349/8430799.pdfIn PDF document text
    • http://kellys.space/is_the_book_war_horse_based_on_a_true_story3hkz0.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/bca76f38-6105-4e8e-9e84-8240f4e15e12/63881025668.pdfIn PDF document text
    • http://taluzeze.rf.gd/tusexixaki.pdfIn PDF document text
    • http://vovajixavago.epizy.com/pavadano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be2716f4-63c4-45bd-b7d7-7345e51655e9/98058502708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ccd27db-49d1-42c2-93c2-ae84278a14dc/78279705065.pdfIn PDF document text
    • http://velupar.epizy.com/noun_determiners_worksheets_for_grade_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1644ea8-0458-4570-aa55-a11a9ac69824/45353119072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a97e191e-077a-498b-a297-d8846cfd5a54/garitulopesajiwiderel.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_off0000f405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF405 5356 bytes
SHA-256: 94cd633a6188b86ef6a69980477129b40426bd6ab72c222dfef648bed50ba5a5
font_01_sfnt_off00010625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10625 12004 bytes
SHA-256: 61f54db3ed1ed0a0f5e88892a6e158ca146f2187a4c2077b4ba1eb0ddc833ce5

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