Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced164fff580c163…

MALICIOUS

PDF

82.3 KB Created: 2020-12-26 22:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0b42f40e6813158db6aa37bed46a9e9c SHA-1: 9c674abf5b00cc9ba6b3c8738b3f25ec80883249 SHA-256: ced164fff580c16351f3cdd2431bd74338086d7f9d9fa3997c8c59cdb27be66b
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, specifically a payment redirection scam, as indicated by the 'SE_PAYMENT_REDIRECT_LURE' heuristic. It contains a large number of external links, many of which are SEO-optimized, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the presence of numerous URLs points to a likely attempt to download or redirect to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://trafficel.ru/aws?utm_term=gta+vice+city+cheats+apk++android PDF link annotation
    • https://cdn.sqhk.co/kejofuvata/jwcMigg/free_vpn_unlimited_proxy_for_android.pdfIn PDF document text
    • https://fezimadi.weebly.com/uploads/1/3/4/4/134487715/lowokebatorelo_rifibufij_tesaxuboxuxapi_velewalo.pdfIn PDF document text
    • https://susetizumuru.weebly.com/uploads/1/3/4/4/134461935/9756257.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/ihjiihg/funny_short_video_clips_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444622/normal_5fdafd9dc0884.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuzini/Wvihc7Y/ice_galaxy_s7.pdfIn PDF document text
    • https://bupiwiwokegiju.weebly.com/uploads/1/3/4/5/134598777/binafulijamew.pdfIn PDF document text
    • https://cdn.sqhk.co/liwewajawab/R0VZNjG/faginugupelezasi.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/319c4bd274986.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7be87e6-447b-405f-86ce-e5970f47e06c/xovuvagexojekinojif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d964766-b998-40fe-ad1d-5e47c5363f65/88184442022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d727c41-a9c6-49c0-9798-a009edaedc6b/br.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b6ae74c-a456-492d-af14-94911ecb36ea/31179474940.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AA 5388 bytes
SHA-256: 7ca84dde8180c28babb9d5ec32fea4e92b62a8e4c328403b0a163974b31896da
font_01_sfnt_off00011709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11709 10796 bytes
SHA-256: 9c1e9aff73820e0736c3674b8f5f03985925f6846daf20b5ae6a350226e51032

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