Malicious PDF — malware analysis report

Static analysis result for SHA-256 3251097e8df9929b…

MALICIOUS

PDF

80.1 KB Created: 2021-03-17 08:10:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ae667217171c6beba80a2a5b30ee7374 SHA-1: 244da11defd89512aad6fda6dfd3da3270c8072f SHA-256: 3251097e8df9929b8c724e93ceb20ed9474dcd1dd63b2649f7dc4d80fcb92af0
156 Risk Score

Malware Insights

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

The PDF file is flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a significant number of external links, with one pointing to 'ponafet.ru', suggesting a link farm or redirection tactic. The document body, though heavily obfuscated, contains keywords related to 'Argos catalogue' and 'pdf', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/award?keyword=argos+catalogue+online+pdf PDF link annotation
    • https://cdn.sqhk.co/gipudeviwapi/Nid97hf/cinemark_peru_plaza_lima_sur_cartelera.pdfIn PDF document text
    • https://cdn.sqhk.co/zetoreli/Dgfjagj/huey_magoo_s_winter_springs_coupons.pdfIn PDF document text
    • https://cdn.sqhk.co/punenekebi/hXigL9P/dutanijulu.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/cghLjhE/zogurataloxud.pdfIn PDF document text
    • https://fibupodofakakov.weebly.com/uploads/1/3/4/4/134496100/xamituxubavusideme.pdfIn PDF document text
    • https://bejamipoxef.weebly.com/uploads/1/3/5/3/135318713/vozetaporu-lonipe-xefadi.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekata/Kibiigf/mofibafudazogezupufumotu.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwuvojik/djdFibR/51710118166.pdfIn PDF document text
    • https://cdn.sqhk.co/javepuju/1iihiVe/flick_hashtags_review.pdfIn PDF document text
    • https://famuvotatag.weebly.com/uploads/1/3/0/8/130813835/8a1bcdd5243.pdfIn PDF document text
    • https://cdn.sqhk.co/wobivada/RRbjjVU/find_fixed_objects_in_excel.pdfIn PDF document text
    • https://tazipapanora.weebly.com/uploads/1/3/0/7/130776418/toposetabedagosiw.pdfIn PDF document text
    • https://cdn.sqhk.co/vexapalas/geq5pxG/xafeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/83394083819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c13f5d-87e8-49d7-b572-ec80daa14315/how_to_pass_algebra_1_final.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/bootstrap_4_forms_with_validation.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/30043667821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36820d27-5907-4625-85b3-7e3b1735e57a/faiths_of_the_forgotten_realms.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/28701973761.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ec84f5-86f6-4c1e-8de2-6237109e9c0e/is_a_malibu_front_wheel_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/62274851743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a61d5cc2-1124-4697-8830-3945338fa8c3/how_to_install_a_rheem_50_gallon_electric_water_heater.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/a_most_violent_year_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/defa6a96-99ba-4030-9ae7-352f3bfba691/what_are_the_three_factors_that_influence_perception.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/30690426789.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_off0000fb07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB07 5312 bytes
SHA-256: 046d72321123ebc5ae25f2c7adad575c5641a0eadff7c49e319621a4580b776b
font_01_sfnt_off00010d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D30 10928 bytes
SHA-256: 178cf9b32b430a8af53fcf6b408f4133e79d15430f20c65c554eb9b585d0a660

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