Malicious PDF — malware analysis report

Static analysis result for SHA-256 b063ab3675fad1ab…

MALICIOUS

PDF

83.0 KB Created: 2021-04-01 03:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: f33a564290791e06d76b9ccd665ed9c5 SHA-1: b6ee3f7ebcf4658bc9f1426b5141d311966309ce SHA-256: b063ab3675fad1ab1090c1baa66ac27d19133395966aedb632f49467f1d79f47
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The document contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically highlights the nature of these links as a potential lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://kuzutuzo.ru/wix?keyword=animal+jam+alphas+fan+art PDF link annotation
    • http://italiahot.fun/el_conde_de_montecristo_pelicula_2002_wikipediaqhx3z.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/23e33e70b7c.pdfIn PDF document text
    • http://yourcy.com/how_champions_think_free46823.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwesedujila/ihXjhjg/29763925368.pdfIn PDF document text
    • http://topcreditreport.info/where_can_i_get_a_ssa_10992hy86.pdfIn PDF document text
    • https://jikegasabum.weebly.com/uploads/1/3/1/8/131856907/zakuxavavevir.pdfIn PDF document text
    • http://premial.su/35830519404d1bb6.pdfIn PDF document text
    • http://spainsale.pro/93036792558qg6l4.pdfIn PDF document text
    • https://girewatadetax.weebly.com/uploads/1/3/2/6/132681062/eb73344.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/fggVjcw/jedi_runner_photography.pdfIn PDF document text
    • http://itdiscount.info/718981235792v88x.pdfIn PDF document text
    • https://pedudevapo.weebly.com/uploads/1/3/4/7/134719514/9804628.pdfIn PDF document text
    • http://bcipreactivaperu.com/the_5th_wave_book_3_summarycdg0e.pdfIn PDF document text
    • https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/nirulofekoloto.pdfIn PDF document text
    • http://gaydating.world/29799730804o1qsl.pdfIn PDF document text
    • https://nepokotivo.weebly.com/uploads/1/3/2/8/132814168/7492178.pdfIn PDF document text
    • https://merasata.weebly.com/uploads/1/3/1/3/131378960/gowabo_mokaduzezulode.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/PYNigTv/tubi_free_movies_and_tv_shows_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/ieyhf52/clasp_knife_phenomenon.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/cihjc9h/kisefaror.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://libizokize.rf.gd/kurojudoxisop.pdfIn PDF document text
    • http://sipitifijuju.epizy.com/an_astrologer_s_day_summary.pdfIn PDF document text
    • http://zodumokosijupe.epizy.com/android_development_training_near_me.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_off000102cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CC 5204 bytes
SHA-256: 1f7fc8d3f984cae0ed3b9dc8250d95c2832f8d76b94f0ba66d32f7d27471b778
font_01_sfnt_off00011455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11455 12544 bytes
SHA-256: af17f3d144e65f56e29787a83bd321dd58a5d73d88855d79afda6c829dcec77b

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