Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e0b8e629531480…

MALICIOUS

PDF

86.9 KB Created: 2021-03-25 13:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 132b54fab3bce0d10522e305c75b1627 SHA-1: 3e8aacbd0b26d881d64bff8010bf4de968593974 SHA-256: e6e0b8e629531480b1779643d55d476d78635793b9a1a6c62e5804f852277662
186 Risk Score

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://lozipotod.ru/wix?keyword=kazakus+potion+guide PDF link annotation
    • http://plafond.xyz/realidades_2_capitulo_2b_quizletka3y4.pdfIn PDF document text
    • https://jixusalozexifan.weebly.com/uploads/1/3/1/4/131407855/c2adc51.pdfIn PDF document text
    • http://richteam.site/division_with_pictures_worksheetzofcj.pdfIn PDF document text
    • https://pufukowog.weebly.com/uploads/1/3/4/5/134583281/d45c726ed0b82.pdfIn PDF document text
    • https://buvosaxemapo.weebly.com/uploads/1/3/1/4/131437370/0584a.pdfIn PDF document text
    • https://famutogerene.weebly.com/uploads/1/3/4/6/134688643/6624799.pdfIn PDF document text
    • https://pejoguroboxifuj.weebly.com/uploads/1/3/1/6/131637830/952c1ee04fbd359.pdfIn PDF document text
    • https://ridawixesij.weebly.com/uploads/1/3/4/6/134660161/97689.pdfIn PDF document text
    • http://marketitaly.info/finakaloy0ql9.pdfIn PDF document text
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/sifigebu-rinipa-famotofijuta-vojade.pdfIn PDF document text
    • http://remontvorot24.com/jijabugitifogbitl.pdfIn PDF document text
    • https://miroguwitofenev.weebly.com/uploads/1/3/5/9/135958286/fexubunada-sixenakeje.pdfIn PDF document text
    • https://wupanotowi.weebly.com/uploads/1/3/1/4/131406855/defuviwi_fopitudisimevus_vugesogep_memurawegemoni.pdfIn PDF document text
    • http://zoneeuro.pro/mr_coffee_4_cup_coffee_maker_walmartoucq2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ed8bc375-cd54-49ab-9ddb-988cb5b2fc3d.filesusr.com/ugd/3f3824_e752166147d748f98b34214d68dd8e78.pdf?index=trueIn PDF document text
    • https://e20d271a-53e3-41f9-9180-d6cd5f9fd148.filesusr.com/ugd/6cfc61_82dbb761ad2c4562b2edf942fec152c1.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

Related samples 8

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_off000117b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117B7 5080 bytes
SHA-256: f754cf55a72eb9da892ad97f58eefd042541cc1611cdf5df64ab2caf3d54816a
font_01_sfnt_off0001291e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1291E 11056 bytes
SHA-256: 91c3125010a42dba12d726ead463b152b57b0e2bfb41b417d58ae95672b7183a

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