Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f350e1931ed15e4…

MALICIOUS

PDF

182.0 KB Created: 2021-03-16 04:38:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: ca9d22bf6899bdf2b851224188f3c3f5 SHA-1: a87b7ef11aca8bda231a13c3d85918bd224720a3 SHA-256: 0f350e1931ed15e4c6f2be30da034db9308951d20e2e67c0c38a9eca52bc90ab
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically pointing to a site offering a 'witchery mod vampire or werewolf' download, suggesting a lure for phishing or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

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://mezovuduw.ru/wix?keyword=witchery+mod+vampire+or+werewolf PDF link annotation
    • https://cdn.sqhk.co/vakolitakap/gf0xgXY/memes_wars_2_mod_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480886/normal_60248a1da9bc8.pdfIn PDF document text
    • http://pimidemo.iblogger.org/bitdefender_2018_full.pdfIn PDF document text
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/silebolasexu.pdfIn PDF document text
    • https://cdn.sqhk.co/jedepazisu/igigfih/luvowomesijoxepemozetez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447108/normal_5fe1bf45cfa93.pdfIn PDF document text
    • https://tovoginimu.weebly.com/uploads/1/3/4/3/134379987/letaronibokadivevi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405654/normal_5fc9404ac4cc9.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/id4hiq3/temevasajopubegoten.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/hfG5icd/bexudowifemujixet.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/Cgfhhif/fun_things_to_do_in_jacksonville_il.pdfIn PDF document text
    • https://cdn.sqhk.co/dubibuwa/GrOigok/the_sims_freeplay_cheats_unlimited_money_no_verification.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373511/normal_60479e9f0e7e2.pdfIn PDF document text
    • https://mixenabunagoxo.weebly.com/uploads/1/3/5/3/135320093/9682446.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_6019dda758b9f.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/gSQRhgU/free_photo_transfer_app_iphone_to_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f621ecf8-e26c-4db3-9bdf-176eeceb312d.filesusr.com/ugd/b3755e_8328f6195c1349918667984751b90a6d.pdf?index=trueIn PDF document text
    • https://050a9d39-d8a1-4107-8be8-b2b70b72e454.filesusr.com/ugd/5262df_32bc04d961b34299adaa4234e62551fa.pdf?index=trueIn PDF document text
    • http://nifibomagogov.rf.gd/harga_mixer_mackie_16_channel.pdfIn PDF document text
    • http://gewejowanasov.epizy.com/a_wink_and_a_smile_piano.pdfIn PDF document text
    • http://nozixexegaliwe.rf.gd/curriculum_vitae_sample_format_for_fresh_graduate.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_off0002915c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2915C 5484 bytes
SHA-256: 89755d36a131730da85c1616aedb8c3507478a81638c0f9485c19f3c5e571209
font_01_sfnt_off0002a3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A3FA 11200 bytes
SHA-256: 0a165379651a25e8633fcda3c157f527eaced53cc0d5bbf9318a6058c307bb84