Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01ee5f315e65b96…

MALICIOUS

PDF

76.3 KB Created: 2021-04-14 00:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 15cd326846eb7709508551559071b22f SHA-1: bffc8080773fd2cfbbb08327b9dc44563e1c85f6 SHA-256: d01ee5f315e65b96b438d9498abd4e2fe500d245de319af35e3b40912346907c
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, and detected by ClamAV as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The primary URL, 'https://seumenha.ru/strik?utm_term=how+to+monitor+energy+usage+at+home', is likely part of a phishing or scam campaign.

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://seumenha.ru/strik?utm_term=how+to+monitor+energy+usage+at+home PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486368/normal_5ffdd4578c0f3.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/Jggjfgd/tisipa.pdfIn PDF document text
    • https://totibevopomuv.weebly.com/uploads/1/3/0/8/130813722/9258715.pdfIn PDF document text
    • https://kuvutokejutal.weebly.com/uploads/1/3/0/8/130814176/7995b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377400/normal_6028b8ae94bfb.pdfIn PDF document text
    • https://womegirig.weebly.com/uploads/1/3/4/5/134506381/mopikutoxibodo_voletuwum.pdfIn PDF document text
    • https://pusuranan.weebly.com/uploads/1/3/4/5/134598414/pavexudidiwo-nizojujiga-novujiwosef.pdfIn PDF document text
    • https://kirorasonosa.weebly.com/uploads/1/3/4/7/134743937/629bfe7ca7b.pdfIn PDF document text
    • https://gupebuxoguwev.weebly.com/uploads/1/3/4/3/134381402/kajiravobuzet.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxozamikoge/fhejagj/explorer_heyerdahl_crossword_puzzle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391037/normal_600f5360a1dff.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/gNAQqEj/lalapafefunupip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://089130c0-62ae-4bf1-a93c-656440fe8451.filesusr.com/ugd/738632_e0a34ca5bdbe4ba29b1ce0f2e136aa3d.pdf?index=trueIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_2f292f5940304c19ba1ee7df4e1a6fdc.pdf?index=trueIn PDF document text
    • http://tavupikegoseri.epizy.com/de_beriot_violin_concerto_no_9.pdfIn PDF document text
    • http://bowenadulopusin.rf.gd/mcdonalds_coupons_july_2020.pdfIn PDF document text
    • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_009935e769834862828d3e67f3c3acf6.pdf?index=trueIn PDF document text
    • http://selaxarizipa.rf.gd/is_there_a_recall_on_2016_ford_explorer.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_off0000ed57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED57 5224 bytes
SHA-256: 69d8925a4b2c5795caeff09780343b6e4d55bb1c08dcce13195108a5279e2a21
font_01_sfnt_off0000ff05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF05 10832 bytes
SHA-256: 22379387ce0524b0d068c8eda4a801f8089e3fce8e4632e96a637b3796aed5af

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