Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f365337218b82c…

MALICIOUS

PDF

76.7 KB Created: 2021-03-13 21:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: be1ed04bcc44741c5a7df397104676e3 SHA-1: c6f64b26fd9e1aa1acc3d87306a54d61d8fd212d SHA-256: c0f365337218b82c093676f2505eb168ac96a7ca487fcb576d5eef4f3df20265
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were extracted, the PDF structure and embedded links are indicative of a malicious document, potentially delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jumiwimov.ru/wix?keyword=i+drive+a+dodge+stratus+gif PDF link annotation
    • http://flash-sar.online/best_gre_words_app_ios1fnds.pdfIn PDF document text
    • http://xxlmature.site/xepasaxesogupkjmm4.pdfIn PDF document text
    • http://mon-cmso.best/2002_polaris_magnum_325_owners_manualwn1th.pdfIn PDF document text
    • http://vittorguxx.site/chapter_2_the_chemistry_of_life_vocabulary_review_crossword_puzzle_answershzuwu.pdfIn PDF document text
    • http://trychambre.xyz/duzisarikixibizuc13.pdfIn PDF document text
    • http://the-english-temple.com/les_trois_mousquetaires_1993_film_complet3qmgt.pdfIn PDF document text
    • http://omerkatanalp.com/vex_robotics_competition_2017gpyc7.pdfIn PDF document text
    • http://mamajan.space/sabadulemezopizupibavutim63s1.pdfIn PDF document text
    • https://datuzela.weebly.com/uploads/1/3/4/1/134109276/jizagiguvalus-rijig-dobodaxeto.pdfIn PDF document text
    • http://everydayy.fun/5126218162tojbr.pdfIn PDF document text
    • http://mrt-zdes.ru/bunny_buns_coder1mun.pdfIn PDF document text
    • http://changely.club/mukuxafekenamgxjc8.pdfIn PDF document text
    • https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/517c82f4e564.pdfIn PDF document text
    • https://kaxozugusejerob.weebly.com/uploads/1/3/1/4/131452826/zogowe.pdfIn PDF document text
    • https://lilufegat.weebly.com/uploads/1/3/5/9/135965666/xozesirokegi_mokafi_sawagiximerove_wukokofadiba.pdfIn PDF document text
    • http://alcexpress1.xyz/54110557131yqm66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_8c1975d0c992418d81efb4d2629896b0.pdf?index=trueIn PDF document text
    • https://71e5fc8e-cc9a-4633-96c3-2c70acd464d0.filesusr.com/ugd/f08e01_514ccd890dc44c3da3f5025d7b0479d0.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_off0000eaa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA0 5040 bytes
SHA-256: b46c7a4b974c52ca457d525f60ab0c5a19b43fc30c788b3b0ff6cdb78372daa8
font_01_sfnt_off0000fbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE0 11916 bytes
SHA-256: e87fd5fd139c1bb050eccd83be4d4f773d72396bb786a07687dbe98e3d419411

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