Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acfd1838654e3bc…

MALICIOUS

PDF

70.8 KB Created: 2021-04-27 05:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8bbe83e7c56a535835a717654b742d7f SHA-1: 252bbd23c98273c2807e81f163a0f3f061a1d5cf SHA-256: 9acfd1838654e3bcaf96d649e70e5e51fee8f19f35d999a741df11ce98298b09
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to disposable domains and are likely used for phishing or to redirect to malicious content. The PDF's structure and embedded links suggest an attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9633

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://leonvi.ru/strik?utm_term=taco+bell+beefy+5+layer+burrito+ingredients PDF link annotation
    • http://goodshopsales.xyz/rozoxujqvnap.pdfIn PDF document text
    • http://worldthailand.fun/gibabetesuwaputesdjk1g.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/assurance_bcs_preliminary_question_bank_download.pdfIn PDF document text
    • http://mosquito.codes/run_button_disabled_android_studioubtcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_60435ea96ba46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492575/normal_5fce5e14519cb.pdfIn PDF document text
    • http://kanshoper.site/polarity_test_of_3_phase_induction_motorm505e.pdfIn PDF document text
    • http://twobigs.space/738265285918dfxa.pdfIn PDF document text
    • http://geleostone.online/647168068035b601.pdfIn PDF document text
    • http://meblik.su/ncl3_bond_angleyow47.pdfIn PDF document text
    • http://sumigemag.mywebcommunity.org/66362421190.pdfIn PDF document text
    • http://beritox.medianewsonline.com/denozubapetisi.pdfIn PDF document text
    • http://makebugobiwuka.mypressonline.com/tugazonurabikisapilifefim.pdfIn PDF document text
    • http://mezogevap.mypressonline.com/jurnal_dialypetalae.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/xixiretirimigak.pdfIn PDF document text
    • http://mebelrostov.ru/how_do_you_win_the_lottery_in_trinidadj33qx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://matewedidoxeber.onlinewebshop.net/nys_dmv_cdl_permit_test_appointment.pdfIn PDF document text
    • http://pajupevezujugut.atwebpages.com/26339657637.pdfIn PDF document text
    • https://b32521b7-32ca-447e-9967-d27d0dce683d.filesusr.com/ugd/800b88_ede7ecd1467344cbb57ebcdce33babcc.pdf?index=trueIn PDF document text
    • https://feedbc21-cb93-402c-9ae2-3476589645d2.filesusr.com/ugd/f3ecbe_ba32230fa4184c2683bde59808e47ea2.pdf?index=trueIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_1ea929294c14451281b54b3055d0ff45.pdf?index=trueIn PDF document text
    • http://sanojepenot.onlinewebshop.net/46146173936.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D00 5388 bytes
SHA-256: 248e3a770b4ee5f67ac1a7dd14cf7dcc54604b2ba2c4f2b4df3e5ba06d777bdd

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