Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2609a8afa05bff…

MALICIOUS

PDF

63.5 KB Created: 2021-03-01 05:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 50c18b4cb6ab6c68d8a193fe937aea7b SHA-1: 6d38b0e406d9dd7b4765d230eeea05b407bef167 SHA-256: 3a2609a8afa05bff907e0d6db2f3215b8ebeead40eebdca1522267ef271e12f7
126 Risk Score

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://nipisod.ru/award?keyword=what+oil+does+a+4.0+jeep+take PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483851/normal_6005dee18051d.pdfIn PDF document text
    • http://joxufovogikera.iblogger.org/human_anatomy_atlas_mod_apk.pdfIn PDF document text
    • http://meriline.store/rifujataxulihw7gr.pdfIn PDF document text
    • http://evakuator-uga.ru/what_is_the_book_hatchet_all_about2jho8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_602fc02321947.pdfIn PDF document text
    • http://healthytrands.com/huck_finn_quotes_about_friendship_with_jimnn2y7.pdfIn PDF document text
    • https://dopakujovifoba.weebly.com/uploads/1/3/0/7/130739833/39c8553470116.pdfIn PDF document text
    • http://pokemonrivals.online/472132660965zdos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5fd1c305e8fa1.pdfIn PDF document text
    • http://remontnatali.ru/43064259141prd7j.pdfIn PDF document text
    • http://yoganchik.space/talilabuguvibulpse0l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443824/normal_5ff65f3b7abe5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://terabamof.rf.gd/86107799161.pdfIn PDF document text
    • http://fizufizobizud.epizy.com/western_digital_my_passport_wireless_pro_2tb_manual.pdfIn PDF document text
    • http://jejivosijej.rf.gd/65061812602.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_off0000bf44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF44 5364 bytes
SHA-256: 78652633d36735838f590748695cf07e4a589a6153697098a67907259d6ff460
font_01_sfnt_off0000d19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19C 9312 bytes
SHA-256: da262e897bff6e89b04752bce0a4b58408794b2050f0a7c7556e90f570e2c789