Malicious PDF — malware analysis report

Static analysis result for SHA-256 123bb6bd4702e14b…

MALICIOUS

PDF

81.2 KB Created: 2021-05-15 22:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 25d4d94cd4ab816d865c9d4b273d6697 SHA-1: b0efd4f25c446986aaf35937355d8fe65c448fb8 SHA-256: 123bb6bd4702e14be25b1ab377a270ed0f814acd9710554938bb81fb5222acd0
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://dugedepap.ru/strik?utm_term=can+i+get+a+computer+programming+job+without+a+degree PDF link annotation
    • https://cdn.sqhk.co/jaguwubax/fijjdCT/financial_feasibility_study_template_excel.pdfIn PDF document text
    • http://urolog.xyz/homelite_xl_chainsaw_manualg69l5.pdfIn PDF document text
    • https://cdn.sqhk.co/wogirujut/xhihghh/diy_christmas_tree_ideas_pinterest.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393189/normal_602d084ade4ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489587/normal_5fc7581e93407.pdfIn PDF document text
    • http://shoop-fh.ru/foginapepekilugqbpa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_5fe79fcd9da54.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/MhdLsij/67660157189.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/cancionero_camino_neocatecumenal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451033/normal_60252fdc797aa.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/j9Nijhb/zavunirepobegogonuwux.pdfIn PDF document text
    • http://myshoes.moscow/university_of_colorado_boulder_aerospace_engineeringuwswt.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/987eeb36-ec4f-400e-af4a-3aa171c241f7/introduction_to_development_economics_book.pdfIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/sepux.pdfIn PDF document text
    • https://60659a61-a27b-47ea-8eac-a81775c62269.filesusr.com/ugd/7a7fb1_740f9a9c21f245f58c2ae73555699b29.pdf?index=trueIn PDF document text
    • http://dijipola.onlinewebshop.net/47432223970.pdfIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/77914861223.pdfIn PDF document text
    • https://8533cbf3-c0d6-400c-bdf8-8ca38cf0242b.filesusr.com/ugd/135178_ee9a7ca6006d474c9d5b63683fdea4a5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce050262-eba7-41f0-8c22-40dd1ed141c2/why_was_girlboss_cancelled.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE43 5492 bytes
SHA-256: 00b830653f04b897d1b47140e7bba231e2f4873ae5f5ca8c712025a695578e4d
font_01_sfnt_off000110d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D4 10708 bytes
SHA-256: cb60564847f02a9b85865876b26f1a5919bef7a957e7c587da11d26f428abe3e

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