Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e0e0b82cd9213c…

MALICIOUS

PDF

41.3 KB Created: 2020-07-08 15:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f278c6051094ebcb854727fb5f61e99f SHA-1: f80febe5e6f8912bd5c76e6bd5e0b2110b405d7a SHA-256: 66e0e0b82cd9213c3e9fb72fe4814aada71394f4d40bf632f34cf0bf1566ef68
174 Risk Score

Malware Insights

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

This PDF document contains numerous links to external PDF files, a technique often used for SEO poisoning or to host malicious content. One prominent link redirects to 'ttraff.cc', a known malicious redirector. The document body also contains a similar URL, suggesting an attempt to lure the user to a malicious site. The presence of many external PDF links and a redirector indicates a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ttraff.cc/wb?keyword=prism%20medical%20ceiling%20lift%20manual
    • http://files.downingmsband.com/uploads/1/3/0/9/130969709/11392e1c7.pdf
    • http://files.monavalehospitalauxiliary.org/uploads/1/3/0/7/130738501/xivudaperesave.pdf
    • http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.pdf
    • http://files.essenceofbeautydublin.com/uploads/1/3/1/6/131637057/9362341.pdf
    • http://files.doggiestylezinc.com/uploads/1/3/1/8/131856430/bebadogugef-wixito-jabinopi-perafuxojiradur.pdf
    • http://files.paramountrec.com/uploads/1/3/0/7/130775827/wanuvawofi.pdf
    • http://files.brynscottgrimes.com/uploads/1/3/1/8/131856430/5d32f8e.pdf
    • http://files.helptakeaction.com/uploads/1/3/2/6/132681938/3009213.pdf
    • http://files.banksfamily2017.com/uploads/1/3/1/8/131871648/4850eb44d.pdf
    • http://files.bellycomesfirst.com/uploads/1/3/0/8/130815095/pukeb.pdf
    • http://files.camera1.ca/uploads/1/3/1/3/131380413/pizixejawij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://xulijareda.files.wordpress.com/2020/07/tefulebuzu.pdf
    • https://kesasite.files.wordpress.com/2020/07/gipasuxabureta.pdf
    • https://farunowe.files.wordpress.com/2020/06/vawitovivigujibakutelupap.pdf
    • https://zozumak.files.wordpress.com/2020/06/91461155675.pdf
    • https://vikukixiv.files.wordpress.com/2020/06/zojufotusukukemonugog.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_off000063ce.bin
48a843add23b2def57be383ee1e56579ba527079afb311db3360703a03070f55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CE 5112 bytes
font_01_sfnt_off00007509.bin
53bd9347f0452f5f70fbb47228b2ee0d9980dbaf4a887e1b763e0803e8719639		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7509 10316 bytes

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