Malicious PDF — malware analysis report

Static analysis result for SHA-256 356d76f418b34258…

MALICIOUS

PDF

32.8 KB Created: 2020-08-25 06:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c2292f0a1e0431a76b408ed255c8d73 SHA-1: faa157afc1c0428238a91bd4c86617a9219f8a69 SHA-256: 356d76f418b34258cf6095715e45ed956dcf3302d511cb32cb3248c126a32f53
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.cc' domain. The document body, though heavily obfuscated, contains references to the target URL and other Shopify-hosted PDF files, suggesting a social engineering lure. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector link confirms the intent to lead users to harmful 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.cc/pify?keyword=december+1963+trumpet+sheet+music In PDF document text
    • http://bikun.badgirls.hu/uploads/1/3/1/6/131606875/3805847.pdfIn PDF document text
    • http://rorupol.thecatsmeowtarotandtalismans.com/uploads/1/3/1/0/131070027/9267947.pdfIn PDF document text
    • http://files.affinitybodyworks.com/uploads/1/3/1/6/131636814/d244cf369.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/1/0435/8144/0168/files/27435199539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/3._5_core_rulebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5935/4517/files/loxunefaletewalatukulik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5790/5818/files/67906469241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/c_objective_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42262915950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87745409623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/ac_market_cracked_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6120/5399/files/16638887452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/barrows_gloves_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/31498434641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/sizobenatisorejunixagome.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_off000043b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43B1 5596 bytes
SHA-256: cd9a73dd28c9bb230ac778ac3c72362d409d99ea3ec07b666c92800f231dd7ff
font_01_sfnt_off00005696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5696 9244 bytes
SHA-256: 5477413934c27a747b4ff1360e72cb6a68d3a9cdfe5088635320a90f39fe9df0

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