Malicious PDF — malware analysis report

Static analysis result for SHA-256 c27f147765985394…

MALICIOUS

PDF

74.0 KB Created: 2020-12-23 10:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 76c51c9dbc49b7282375f5a52c19f25f SHA-1: 93b2cc8c2fa41a8ecc62962e78c93abb257cabca SHA-256: c27f147765985394877434a987fc608c3a52deddd0e533fa16b560fba94c171b
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=shepherd+retriever+mix+temperament In PDF document text
    • https://jagusidenoz.weebly.com/uploads/1/3/4/9/134902343/01903.pdfIn PDF document text
    • https://widufosonetorif.weebly.com/uploads/1/3/4/5/134598319/gobanevaz_desagoga_volemukipimefi.pdfIn PDF document text
    • https://zizeximafebofiz.weebly.com/uploads/1/3/4/3/134369397/nezive.pdfIn PDF document text
    • https://gutawiwexuzoti.weebly.com/uploads/1/3/4/4/134477232/88bc7.pdfIn PDF document text
    • https://sufimaxunexex.weebly.com/uploads/1/3/4/3/134345405/tafuvaku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf25564be903ae63f48b3/1606218326910/67690470337.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/amcor_dehumidifier_dc930h_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/96817396386.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a8125fa98a681f0fc516/t/5fce946708a3ca44d3b13de0/1607373928474/vonipitezivamipatab.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c66b27a199023ab4af32/t/5fc1384a18e72e5fdb03a89c/1606498378214/lux_testing_app.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e844cd1e280355d45049/t/5fc3c09018e72e5fdb4a5be7/1606664337488/lasezalopetopavuwafagebi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5240da13a450bab0fe7b5/t/5fcb02c11df7590d80d83779/1607140036292/dirt_bike_games_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/printable_colouring_sheets_for_christmas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29d8327a199023ac0643f/t/5fcd54256f0099009e73de66/1607291941849/butterfly_ping_pong_balls_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6b878abffab30daa7198b/t/5fcf732d3fa051062b483c8b/1607430957989/lomemurenanabub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66C 4896 bytes
SHA-256: b4a8e972faa622709517d11eadf4e5e11de68728b8caaa02109150a98e251f03
font_01_sfnt_off0000e6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 11172 bytes
SHA-256: d4ee2385d012437e2f4ace609cf58c52c4b03af3660c3c4e4f07f0eb28188094
font_02_sfnt_off00010d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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