Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e32e197e3c30e47…

MALICIOUS

PDF

86.2 KB Created: 2021-03-19 17:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 93326d3fb8930964442bd687a4c3c863 SHA-1: 9f7901ac26267de059ab343ee73eb2e1630914d2 SHA-256: 0e32e197e3c30e4719d4d2a00320fe4158a7be4e9d3927bc7a93ce2cd94a8da6
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 0.9998

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://ponafet.ru/aws?utm_term=atul+gawande%2527s+book+the+checklist+manifesto PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378153/normal_5feb9d5456f80.pdfIn PDF document text
    • http://jewlgems.com/zalisovubividexogslbi4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492588/normal_603ab5aeed2fa.pdfIn PDF document text
    • http://egrn-order.online/chest_guidelines_anticoagulation_prophylaxiszg5jd.pdfIn PDF document text
    • http://winoorama.website/11948195776r33bc.pdfIn PDF document text
    • http://ukrdomonis.xyz/char_broil_grill_cover_home_depot8kdxx.pdfIn PDF document text
    • http://help-bluebadgecenter.com/92592646544ejve2.pdfIn PDF document text
    • http://koreatop.ru/baby_girl_white_shoes_6-9_months9ggp1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408584/normal_5ff416022da06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuxesoguzegisox.epizy.com/thirty_readings_in_introductory_sociology_ebook.pdfIn PDF document text
    • https://0dc5016f-38c0-4e11-84f4-4717e3ef4ec7.filesusr.com/ugd/4fd84c_e052f99b80064404be28e0a01b4f7c12.pdf?index=trueIn PDF document text
    • http://pusitarise.rf.gd/mumuxina.pdfIn PDF document text
    • http://dufobirufo.atwebpages.com/download_driver_brother_hl_2240d_win7_32_bit.pdfIn PDF document text
    • https://c81c1a69-aec6-471c-ac34-7a6800eafc69.filesusr.com/ugd/9ef1ea_0863250895c84724bab4f4a64953d12e.pdf?index=trueIn PDF document text
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_002e4aa6a9e3475c91870c6e1a8f8253.pdf?index=trueIn PDF document text
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_88a1217621b94063bf4f644b6dcb97b6.pdf?index=trueIn PDF document text
    • http://lugimeviguv.myartsonline.com/anatomia_de_cabeza_y_cuello_gratis.pdfIn PDF document text
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_eefe2c00590743c8a31a193314e2169e.pdf?index=trueIn PDF document text
    • http://vidarepi.epizy.com/afterburn_aftershock_portugues.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_off0001112a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1112A 5656 bytes
SHA-256: e76ba9702d55e5303eb3c64c417d1d512b302ec4e49f0b670f5f30bade229089
font_01_sfnt_off0001246e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1246E 11064 bytes
SHA-256: 0160b2a22e8f3dde2a93109723b543a155c932fbdc1c06c8f200c4f5de27f1f9

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