Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a193ce5397af8f…

MALICIOUS

PDF

76.7 KB Created: 2021-02-26 04:01:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5051cea9f652973d19b4ea809e1c2ea7 SHA-1: e7a875df9885c530f50d69f9dffd0280ade8ee8f SHA-256: 70a193ce5397af8f6cae6a4de2f454cc6386c3045cecdf82583511a5c22084d5
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'maypoin.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to a manual, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/123?utm_term=black+and+decker+all+temp+steam+iron+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460982/normal_60292138c553c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486969/normal_601413fb47c3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5ffda6c2dca8c.pdfIn PDF document text
    • https://fikobovivinuzo.weebly.com/uploads/1/3/0/7/130739062/tuwidemapita-mefetikaru-vadoluxopa.pdfIn PDF document text
    • https://xatodibe.weebly.com/uploads/1/3/5/9/135966399/jivemasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409409/normal_6017959d42117.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466411/normal_5fd081005fecb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_602bfe071fff8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419851/normal_602ff8a1deda4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383561/normal_5fe5b34782f36.pdfIn PDF document text
    • https://cdn.sqhk.co/rikopekela/hyjbcqd/63444370957.pdfIn PDF document text
    • https://dolilugufup.weebly.com/uploads/1/3/0/7/130776220/fowutimozokakiras.pdfIn PDF document text
    • https://fofifiso.weebly.com/uploads/1/3/4/6/134613093/8442678.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/sabobenuwe/18141885390.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/dinifamurimuwujefu.pdfIn PDF document text
    • http://rigitusavogu.epizy.com/gomotafasurega.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/58736668327.pdfIn PDF document text
    • http://likifodafiduno.epizy.com/tv_guide_for_world_cup_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/18730274615.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/zomiborexaxerewulovavik.pdfIn PDF document text
    • http://tulufuparogig.epizy.com/adventure_escape_cult_mystery_complete_walkthrough_guide.pdfIn PDF document text
    • http://nefigubisi.epizy.com/kabali_tamil_full_movie_free_mp4.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_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 5332 bytes
SHA-256: ee7bfd7f283ee0f74e8b0d2cd27a2386c0131189f77ef6af9149caa1fbc7dbd3
font_01_sfnt_off0001000f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000F 10884 bytes
SHA-256: 1d4ac6e0188d2930100188dd855c95e5ed74e51e956502cfb329f5cbd53af1c3

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