Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ee8698d3704c58…

MALICIOUS

PDF

86.3 KB Created: 2021-02-02 21:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a9f5902d8f1ad4605625bca2ca1bee1c SHA-1: d07acfecb02687c874b848309cece1ce9692cb07 SHA-256: e0ee8698d3704c58b23bddd17a730d9ecf946087a9134613a6c03f6225e27789
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of external URIs and link farm heuristics further supports a malicious document designed to redirect users to potentially harmful content.

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://seumenha.ru/123?utm_term=running+with+scissors+book+pdf PDF link annotation
    • http://jsexj.fun/diratubsoj.pdfIn PDF document text
    • http://de-bewertung-889562.icu/barrons_ap_psychology_7th_edition_p0qvn7.pdfIn PDF document text
    • http://mercelus.xyz/26925951832aexg.pdfIn PDF document text
    • http://belkwigs.com/gurudilaf0fn.pdfIn PDF document text
    • https://puzuzabijil.weebly.com/uploads/1/3/2/8/132814257/cf0c8a56828.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/gXtogeu/regal_theatres_reopening_date.pdfIn PDF document text
    • http://repair-monokoles.ru/ingilizce_dergi_hazrlama_devi2a4ft.pdfIn PDF document text
    • http://mkr-olimp.info/66360992690411yp.pdfIn PDF document text
    • http://digozulujatozuj.iblogger.org/lemuranitedivonowedi.pdfIn PDF document text
    • http://neojust.ru/31275576718ak1s5.pdfIn PDF document text
    • http://hookup666.site/7026649947688dab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://javuxanasojajex.epizy.com/77852756320.pdfIn PDF document text
    • http://gemewepibi.rf.gd/muvuxuwogugabawoleweb.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00012043.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12043 25104 bytes
SHA-256: 6ec13b1c4cccc53adfa5839dc4e6aca0c8ed305c39262e5f3c410334fbb2791c
font_00_sfnt_off0000e7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D7 5476 bytes
SHA-256: 6225d9e26bfb17d5f33523efaccc864d84ed158b231e7499c1ba3196831cdd6b
font_01_sfnt_off0000fa8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 11020 bytes
SHA-256: 2330bb3ae0d9dd23849dd3fe1739a26f14359bce9552bc9e87f948ef4b4df6d2

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