Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0342ecda92ef3c…

MALICIOUS

PDF

91.1 KB Created: 2021-06-09 06:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c91ecf7bc4985b17bc78c05eec39a99a SHA-1: 9eff677639d6127a6979dfd19043a2e8a64b19df SHA-256: 0f0342ecda92ef3cd71ba8db5e370167a1554fe9e33f5e9d3c8841291610f24e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

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://drafthe.ru/pbw?utm_term=mortal+instruments+book+1+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420927/normal_6017717115129.pdfIn PDF document text
    • https://govonomuvilikiw.weebly.com/uploads/1/3/4/6/134620083/5569538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465688/normal_601181ed01661.pdfIn PDF document text
    • https://valiwuvubeke.weebly.com/uploads/1/3/4/6/134694219/dojasuli.pdfIn PDF document text
    • https://watinadapazibe.weebly.com/uploads/1/3/4/4/134492378/5103079.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495264/normal_5ffbd20197a75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446917/normal_6032614742042.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_602a53d6e93d5.pdfIn PDF document text
    • https://zavewixesareput.weebly.com/uploads/1/3/4/8/134855174/2988072.pdfIn PDF document text
    • https://bomirilipaxotez.weebly.com/uploads/1/3/4/0/134096722/9011597867a5a.pdfIn PDF document text
    • https://nuzibekupin.weebly.com/uploads/1/3/4/3/134338080/rakikifunamasedapot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b7c439e-49a5-4a26-a9a3-1eaad39c95ab/how_long_does_the_soundlogic_xt_take_to_charge.pdfIn PDF document text
    • http://garigor.pbworks.com/w/file/fetch/144427437/tajiximewazuxoladeniwiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0af20aa-8859-4e50-93c4-fdd0279db3d0/symbols_in_different_cultures.pdfIn PDF document text
    • http://gazoridixilu.pbworks.com/w/file/fetch/144709566/54802886976.pdfIn PDF document text
    • http://nibenaxibot.pbworks.com/w/file/fetch/144889434/pedideliwotodav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7f63469-5bbc-449a-90e2-84592c01ddd9/what_is_first_order_and_second_order_constructs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef2cd760-eb5c-4f34-866b-7e3b4ff09744/how_to_access_my_cloud_ex2_ultra_dashboard.pdfIn PDF document text
    • http://xexufokug.pbworks.com/w/file/fetch/144871704/allophones_of_t_in_british_english.pdfIn PDF document text
    • http://pewamez.pbworks.com/f/new_hd_tamil_full_movie_download.pdfIn PDF document text
    • http://demopefo.pbworks.com/w/file/fetch/144898467/angle_between_clock_hands_calculator.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

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_off000126cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CC 5448 bytes
SHA-256: 069b5f687ba19188723563c25669ec56574744adf1110b989e3a0ce4c3d74038
font_01_sfnt_off00013943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13943 11108 bytes
SHA-256: 96f2dd64eea04057da9aa609a8ea6b8f661acae9e041f625d957528c0c58f77c

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