Malicious PDF — malware analysis report

Static analysis result for SHA-256 30db5347cc1fea1f…

MALICIOUS

PDF

67.6 KB Created: 2020-12-22 21:14:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da2ed4fbd8bde7069df088113e8d6d4f SHA-1: 5375c1a2ce6e45ad07c642cad0918e8be111561e SHA-256: 30db5347cc1fea1f969ff41d94da06a5aeebda5acb1c028ffe82571615db6187
176 Risk Score

Malware Insights

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

This PDF document contains numerous external links, characteristic of a link farm designed to distribute malicious content. The primary URL, 'https://traffset.ru/strik?utm_term=download+offroad+cargo+mod+apk+2020', suggests a lure for downloading software. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://traffset.ru/strik?utm_term=download+offroad+cargo+mod+apk+2020
    • https://pojojupekofep.weebly.com/uploads/1/3/4/7/134754506/munodiwudolojil.pdf
    • https://tujulita.weebly.com/uploads/1/3/4/6/134687611/kizazonerexa.pdf
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/zuzafalu.pdf
    • https://ziloxewimufe.weebly.com/uploads/1/3/0/8/130813797/pizafofo.pdf
    • https://kajovagej.weebly.com/uploads/1/3/4/7/134747054/bb085a100fab0ad.pdf
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/243e2b9723.pdf
    • https://jidisozipu.weebly.com/uploads/1/3/4/4/134440811/samofefuli-jofigerobija-bezipofepesaxuw.pdf
    • https://cdn-cms.f-static.net/uploads/4461744/normal_5fb914395e358.pdf
    • https://lubavezutumeji.weebly.com/uploads/1/3/4/7/134757539/lonaguta-notebebi-gagonixasizosur.pdf
    • https://jujarodi.weebly.com/uploads/1/3/4/5/134507231/vilosebozuzivu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/litunux/16125531808.pdf
    • https://s3.amazonaws.com/midaguvimabof/kinetic_energy_worksheet_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/e4ee7ef7-ea9d-43e3-a2f0-0304155bc40b/94730065413.pdf
    • https://s3.amazonaws.com/muxozuvalubi/baby_unicorn_coloring_sheets.pdf
    • https://uploads.strikinglycdn.com/files/99f7198f-b1df-4cc1-9244-2b4ca69a8fee/98387431559.pdf
    • https://s3.amazonaws.com/rizijubovapuk/84788888448.pdf
    • https://s3.amazonaws.com/gaxuremewuger/devil_s_advocate_full_movie_480p.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c871.bin
1ec73df572ec7c331a827b28f438da143c4173610f6c61846f65a6ef4badc51d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC871 5724 bytes
font_01_sfnt_off0000dbfe.bin
ce11fdb4a5c50f4ad94d1848f2986d4629fde0b79d9c91f5643eb8fa8f44b55c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFE 10948 bytes

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