Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0cc383441965236…

MALICIOUS

PDF

41.9 KB Created: 2020-08-06 19:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b04c3db70a1158fa06735d35aecbcaa9 SHA-1: b917371ceeebd1608eea2dc5e6b1f0e5a1f43c81 SHA-256: c0cc3834419652365f5a8d42a116459d61ea6da7ea2b788fa0ef8b1218c15974
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, contains the URL that is likely intended to lure the user. The heuristic firings indicate this PDF is a malicious redirector and part of a link farm, designed to distribute further malicious content.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=synonyms+worksheets+for+grade+2+pdf In PDF document text
    • http://files.theanglehomestead.com/uploads/1/3/1/4/131407465/5b6ef2fa8d749.pdfIn PDF document text
    • http://files.cmrcsystems.com/uploads/1/3/0/7/130738792/652aa1.pdfIn PDF document text
    • http://files.yogaatschools.com/uploads/1/3/2/6/132682966/70db8aa358f9c.pdfIn PDF document text
    • http://files.gaithersburgpickleballclub.com/uploads/1/3/1/8/131871571/jolelo-rekakopagome.pdfIn PDF document text
    • http://motovo.lekeapenawriting.com/uploads/1/3/1/4/131453177/3b8a5aff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1129/2829/files/12174187126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/50068644811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/13407328517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7428/8793/files/slader_stewart_calculus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/mokifoduzepaseguwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4693/4430/files/42540197184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44628440260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/kufupekat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/schwerbehindertenausweis_antrag_rlp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/lapatetowajaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8874/7423/files/56436226224.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 5

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_off000063bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 5916 bytes
SHA-256: 44bc7cf360f3b232e2013909be3b928837782319929a7b9c8446470a326806a2
font_01_sfnt_off000077d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D3 10296 bytes
SHA-256: 848d68daab27af6b6fbb20faadd4c77c6d22739da9d860b2034975b53d714167

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