Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d87233b5bdc3f72…

MALICIOUS

PDF

77.1 KB Created: 2021-03-25 09:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a0d71e40b6cb92041f595a4baa9ad2b0 SHA-1: 0933d6709ca9356b1da4961e57a7819773763fa4 SHA-256: 0d87233b5bdc3f72818b55c62026f16f9294a5286c6cb33fe7ad49a3f952228a
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one pointing to a suspicious domain ('maypoin.ru') that is likely part of a link farm or phishing operation. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious content, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/wix?keyword=sawmill+creek+woodworking PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450723/normal_601aa039810b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402032/normal_5fdc77e2944cb.pdfIn PDF document text
    • https://cdn.sqhk.co/faroziwe/XhiiYoT/zonarokapupo.pdfIn PDF document text
    • https://pizosamijuge.weebly.com/uploads/1/3/4/3/134348406/8097082.pdfIn PDF document text
    • https://roboxojepuz.weebly.com/uploads/1/3/4/2/134235986/7161694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_601a6f4334217.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/ieFPSkn/music_ringtones_galaxy_free_download_naa_songs.pdfIn PDF document text
    • https://sawmillcreeIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/forupokisip/56228732545.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/morirepowanuworafatu.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/77268755250.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/hotel_brochure_design_templates_psd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/60800944098.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/69749157109.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/capital_budgeting_sample_problems_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/aadhar_card_form_filling.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/40157217777.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/kung_fu_choy_lee_fut_forms.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_off0000f18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18B 5340 bytes
SHA-256: b8a4276f0f78146d035ac8adf371f12d0c273d5037411ddefa3f3d0e16f3e61e
font_01_sfnt_off000103af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AF 10468 bytes
SHA-256: 0ac6f415ddbadf6c2ce5d5ec1e312dc2cbd74d3fa10e5f7b8109428c8c6783d8

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