Malicious PDF — malware analysis report

Static analysis result for SHA-256 67bf65232ef5e9b8…

MALICIOUS

PDF

95.5 KB Created: 2021-04-11 09:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 50808827613efa823e2a15dabf6cca17 SHA-1: d5ed4fa84d19db5651ceb40655e9a9fc3d263a96 SHA-256: 67bf65232ef5e9b843e01a72619371bacd949da9fd6f6d78f7b5fbe174b40f0b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'soxebez.ru', which is likely part of a phishing or malware distribution scheme. The PDF also exhibits characteristics of a link farm on disposable hosting, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/strik?utm_term=whirlpool+wrf535smbm00+ice+maker+replacement PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417049/normal_600ef5fc5ea67.pdfIn PDF document text
    • http://gisowutuxa.22web.org/addition_worksheets_for_grade_5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384045/normal_6011a6656bd36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420438/normal_5fe4635507836.pdfIn PDF document text
    • http://velodarimu.iblogger.org/farmall_super_c_starter_parts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bff5fdab-9fd0-4670-908b-a1308bb5a9cb.filesusr.com/ugd/227d0f_7420096193104d898faffb206d7426e2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/logically_valid_forms.pdfIn PDF document text
    • http://baduwujik.rf.gd/4416346650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69027ff-6afc-4399-9d69-cf0963e06e47/74970491286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/213881f1-1a71-4d9c-90d9-d28af5186518/how_do_i_reset_my_hayward_pool_heater.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/how_to_draw_anime_practical_guide_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0db50de6-d3cd-452a-a732-1dfea63b103b/united_states_army_symbol_meaning.pdfIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_62c27fdb537f4014a9c4530bcf1812e4.pdf?index=trueIn PDF document text
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_e6dda808b01e4bd78b9a7997f4051324.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d7be29d-fd61-4bcf-be48-512179dc59a3/95732755855.pdfIn PDF document text
    • http://tezuzatarezoz.epizy.com/sorefelivegekowokuw.pdfIn PDF document text
    • https://cdd249b8-77b1-4a94-b024-8995efe4d959.filesusr.com/ugd/d394ff_bd6468fdc8a541c89a77a50c4a1ef71f.pdf?index=trueIn PDF document text
    • https://e0a971b2-7104-4718-9e5f-4f17d768618f.filesusr.com/ugd/6d43b6_d0e878147854477d97f1e11113de1ed3.pdf?index=trueIn 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_off00013320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13320 5992 bytes
SHA-256: 849f9e2853624acd608663e5a9be1fb5f5bb952a4e7478e264892f7145a57286
font_01_sfnt_off00014778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14778 12556 bytes
SHA-256: 7b4baa68cd2fa2055e9a54f3e2ecf064a87527df1c05f0ad723646116c1e8a33

Open this report in the interactive analyzer, or submit your own file for analysis.