Malicious PDF — malware analysis report

Static analysis result for SHA-256 009e650b758f0c65…

MALICIOUS

PDF

88.0 KB Created: 2021-03-22 01:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83391f90670dba5cb1d357d30a957d27 SHA-1: a89cc8754302ae084bc0aef2685215aa5a5b3f2b SHA-256: 009e650b758f0c65244f9c29205385827229e067f432deee01416694aebe66c1
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs pointing to external websites, many of which are hosted on disposable domains or link farms, suggesting an attempt to direct users to malicious content or phishing pages. The document body is heavily obfuscated and contains what appears to be junk data, further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jacksth.ru/wix?keyword=are+frequency+and+energy+directly+proportional
    • https://cdn.sqhk.co/kinemefuwa/djjiigc/science_et_vie_tv_free_prix.pdf
    • https://static.s123-cdn-static.com/uploads/4481839/normal_5fcf512bdc7a2.pdf
    • https://noxolawozin.weebly.com/uploads/1/3/1/4/131452883/nazupixexo.pdf
    • https://static.s123-cdn-static.com/uploads/4495395/normal_5ff71c734770e.pdf
    • http://saxobupazes.sportsontheweb.net/add_text_to_files_online.pdf
    • http://wunuvuzixuxi.getenjoyment.net/wofitilomosukebinaga.pdf
    • https://bexulijariva.weebly.com/uploads/1/3/4/8/134885506/8801732.pdf
    • https://cdn.sqhk.co/midijanere/Ehiggje/47260996360.pdf
    • https://cdn.sqhk.co/jolodovi/gjdbZib/drone_flight_log_book.pdf
    • https://cdn-cms.f-static.net/uploads/4485153/normal_605799843e26b.pdf
    • https://cdn-cms.f-static.net/uploads/4462056/normal_600d66ed75c74.pdf
    • http://sudilufib.getenjoyment.net/how_to_write_philosophical_essay_upsc.pdf
    • https://cdn.sqhk.co/bujasugawo/ihbchaK/vice_news_tonight_episodes_list.pdf
    • https://cdn.sqhk.co/foropogajag/Cgh2Uih/the_floor_is_lava_netflix_host.pdf
    • https://litisenos.weebly.com/uploads/1/3/1/0/131071047/fuvorinojabawekuparu.pdf
    • http://vumajuzatijerak.getenjoyment.net/toguj.pdf
    • http://mikazuxo.mypressonline.com/mijirobamuvaguver.pdf
    • https://cdn-cms.f-static.net/uploads/4391015/normal_6026eac7c0c63.pdf
    • https://cdn-cms.f-static.net/uploads/4454302/normal_6011d7b53c7c3.pdf
    • https://cdn-cms.f-static.net/uploads/4501509/normal_6017b27312b58.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wokasob.rf.gd/kerug.pdf
    • http://xiperaw.rf.gd/do_you_drink_too_much_quiz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3bb.bin
7b536190b3834a587b363196234e03fff3a013751f6e43c99ff048382e23a9e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BB 5244 bytes
font_01_sfnt_off0001059b.bin
cf6c948a5664fa3cfc6a4bd4e451e10ffa49509477c29322566ac11e74ae76dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1059B 12208 bytes
font_02_sfnt_off00012f64.bin
ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F64 16060 bytes
font_03_sfnt_off000143f8.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x143F8 4324 bytes

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