Malicious PDF — malware analysis report

Static analysis result for SHA-256 6193f29ee0bb5f07…

MALICIOUS

PDF

81.2 KB Created: 2021-05-03 21:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7515c3b6188d638954f022faccb40a66 SHA-1: ec0768d8f0aae919abb98484c1d7867224e15532 SHA-256: 6193f29ee0bb5f07caf014d8e614086fb89110544aeff221215d4cf1ad73fa34
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or scam campaign. Heuristics indicate it's a link farm on disposable hosting, and ClamAV detected it as a phishing trojan. The document body, though heavily obfuscated, contains text related to search terms, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/strik?utm_term=photoshop+text+effects+online+free PDF link annotation
    • http://mamuxorap.getenjoyment.net/wugovaxovojagiruxozu.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/mMgdjbo/epic_seven_wiki_sigret.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_6037f97c179bf.pdfIn PDF document text
    • http://gagitevanonuti.mywebcommunity.org/9453172637.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/bkicKSz/80172542650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5fdedae51a7b8.pdfIn PDF document text
    • http://logawedulukudan.mywebcommunity.org/allaitement_maternel_dfinition.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/6zheJgc/kelutirivetobebenitug.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/JeGSJia/craigslist_seattle_boat_trailers.pdfIn PDF document text
    • http://palopej.sportsontheweb.net/12_bar_blues_guitar_chords_easy.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://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_25dc92e385f54f54984523b3b75531ce.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c7a5c2a-91c2-4465-b8f6-f8e50da92460/sewigedosirejon.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/what_is_the_moral_of_why_mosquitoes_buzz_in_peoples_ears.pdfIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_4d635da268d6465494c35807feba9ba9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ceb1694-1bd4-40bf-a2d7-83278564dd97/74806028892.pdfIn PDF document text
    • https://8a833fea-7c9a-4d2e-a5a7-d3590f42a3e5.filesusr.com/ugd/9aab09_acadda41e60d43ce818ae25860a8a6eb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2cadc84-2e4f-4b8e-8124-4e5cbfba2d78/elementary_differential_equations_and_boundary-value_problems_boyce_diprima_meade_11e.pdfIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_b4c91d337e5546be9130bb7ab7ef110d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d4d3f17-5cde-41a7-bff0-1cea7f88b29b/74002932513.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/calories_in_rice_paper_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88336d5f-fef5-485e-bcbc-669f58da17cd/how_long_is_a_trane_compressor_warranty.pdfIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_040f75de69864f44ad8434ae1d8b00e9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/martin_luther_king_speeches_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CE 4752 bytes
SHA-256: 9bc15044237fc20cbe885eac8ceef50d98333d44fd33d5033abd0436b677444a
font_01_sfnt_off000103e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E5 10932 bytes
SHA-256: 70fe7e2231c3a1b165dac1a80fa1d36d470cb82107191f8f611b928f4c16d357
font_02_sfnt_off00012902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12902 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34