Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a19b78fd6b0cf0…

MALICIOUS

PDF

60.9 KB Created: 2020-08-07 21:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1df8d53cbbfb0e9a40f5c4ef0c6f062c SHA-1: 084b693bef7fac4963987004ef432f93429ab12d SHA-256: 55a19b78fd6b0cf0352b9264f569f70b522ccbaf173a763690ce903de79e3367
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to obscure the final destination. The document body, though heavily obfuscated, contains the same text as the URL's keyword parameter, suggesting a lure related to 'small scale pig production'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or to distribute malicious content. The ML classifier strongly supports the malicious verdict.

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=small+scale+pig+production+pdf In PDF document text
    • http://zuxagop.asiamitchelltabb.com/uploads/1/3/1/8/131872055/6872993.pdfIn PDF document text
    • http://files.renewyoubodywork.com/uploads/1/3/1/3/131383949/4171540.pdfIn PDF document text
    • http://files.perryyoungblood.com/uploads/1/3/1/3/131383329/2393668.pdfIn PDF document text
    • http://files.hoffmanindustries.org/uploads/1/3/1/4/131413678/mubezifuder_wusagafulekane_bexapujukozuz.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/1/0431/7410/1160/files/vopusupelisunovazifokuxig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/ginofigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/43869426395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/fixesazeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7505/7302/files/50709466344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/guxoxapikekixol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/tower_of_heaven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/xorixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5798/5189/files/ketewumutofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/antibioticos_carbapenemicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8536/4390/files/sipumevamalugus.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_off0000b0b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0B3 5580 bytes
SHA-256: 5ce3ebcbe2789d4b2e45770f49343e9d6b875334d6e91fef64a82362daa505fe
font_01_sfnt_off0000c391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC391 10372 bytes
SHA-256: a1e423c1d8cf83f0cff9f671524919ec152b1d26000cb825fcf52059efe47d6c

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