Malicious PDF — malware analysis report

Static analysis result for SHA-256 568a180a02168cdd…

MALICIOUS

PDF

76.3 KB Created: 2021-03-22 22:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 047335d870bdbd5bc52caa211bbf71e3 SHA-1: cce9965fba367bff09d4a22a99d6dec7719f5ee6 SHA-256: 568a180a02168cdd25a7060ea2148e0df08dd41f7b8841843414954ddbd8ba96
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam or directing users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/wix?keyword=lorex+security+cameras+manual+lhv2000 PDF link annotation
    • http://oblakova.ru/5946268872ukdi7.pdfIn PDF document text
    • https://wugovaxovagebi.weebly.com/uploads/1/3/0/9/130969592/zejixibigipoxina.pdfIn PDF document text
    • http://form-lnstagramverificationbadge.com/tukujuzelewijm3a.pdfIn PDF document text
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/1038016.pdfIn PDF document text
    • http://vclean-sale.shop/felujifulisubivapivuy3x0.pdfIn PDF document text
    • https://velademepol.weebly.com/uploads/1/3/1/8/131871907/fekezudoxotiw.pdfIn PDF document text
    • http://floradoma.net/libisozonizukbjnl0.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/pamiwu.pdfIn PDF document text
    • http://familyit.info/74616850206vh8fy.pdfIn PDF document text
    • http://fruktovik.com/theoretical_and_experimental_probabix0n2i.pdfIn PDF document text
    • http://ideaita.fun/how_to_change_aspect_ratio_emerson_tv72x19.pdfIn PDF document text
    • http://avit0.pro/kadipavamowegapztw48.pdfIn PDF document text
    • http://gouliwer.online/lunar_eclipse_worksheetc1c25.pdfIn PDF document text
    • https://ludojuvixodezo.weebly.com/uploads/1/3/1/8/131856813/tofuforunapup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pujinit/runanovezivubori.pdfIn PDF document text
    • https://af1bea64-f5cd-41c2-a7c1-97f21c1aa057.filesusr.com/ugd/592671_dc39792c781640dfba691b70963eef38.pdf?index=trueIn PDF document text
    • http://nobapizasiwe.myartsonline.com/list_of_anticoagulants.pdfIn PDF document text
    • http://degevojorak.myartsonline.com/bohemian_rhapsody_tabs.pdfIn PDF document text
    • https://9fbaa0db-fe9e-443e-b503-3d02ea494c21.filesusr.com/ugd/d417e9_db88be05436742e3b3ed4eea2ef87a65.pdf?index=trueIn PDF document text
    • http://fuvarijes.atwebpages.com/cards_against_humanity_online_gameplay.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/cheat_command_block_minecraft_pe_android.pdfIn PDF document text
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_fde3bd83dacb4d02bde606136b997498.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_off0000ecf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF6 5484 bytes
SHA-256: 8dbef909dfb0649cac9c7e8e5a61a17a9142fb39a7fa0757ab10808f07f87934
font_01_sfnt_off0000ff84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF84 10608 bytes
SHA-256: dc1192f90822de092cc28de58fe892a4f8b6b535e8ba8ad0ba312fafe3d2595e

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