Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cd8ca493c80d4a1…

MALICIOUS

PDF

40.4 KB Created: 2020-08-02 13:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b5aea87a12fed25eb4e32aad96b9581 SHA-1: 3ba9ee0338475f57c36e903b6950804ba9e94afc SHA-256: 5cd8ca493c80d4a15ba20e744639c837086f501c56771bea986f18fa238a82a6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The primary redirector URL, 'https://ttraff.com/pify?keyword=common-+size+analysis', is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting an attempt to drive traffic to malicious infrastructure under the guise of providing 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.com/pify?keyword=common-+size+analysis In PDF document text
    • http://files.vq.com/uploads/1/3/1/4/131453399/femesegipo_lozitomi_midavusoxojojaz.pdfIn PDF document text
    • http://files.geoffalainllc.com/uploads/1/3/1/3/131383949/gabekuz-xekewitafan.pdfIn PDF document text
    • http://files.johntstephan.com/uploads/1/3/2/6/132681464/3294955.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/1/0441/2270/1976/files/fagidolamizekibujim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/laxazolakure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/31692621518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/8305650982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/risulibakosot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/talimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/kosefunonalakanigujeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/79312572315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/lumekibirizomokane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/kuwapora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/91244390920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/are_roblox_exploits_safe.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_off000060dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DD 4824 bytes
SHA-256: 32e7a9b3f6dab6c3f1b34e0fde6ac76bd41fc17f15bbf2b1b88b2ff473410b3f
font_01_sfnt_off00007140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7140 10436 bytes
SHA-256: 757c227a3309ec9b14aa373e7e82fc0df9de8f840b233d56c232bb49d722e6ff

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