Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cadc418e9453801…

MALICIOUS

PDF

47.0 KB Created: 2020-08-19 17:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20a861ba22bc5e4a24e0dde2b733d31c SHA-1: 2d842f40757a8a9a761dd1f004832561376f76bb SHA-256: 5cadc418e94538010dc3ad7376baddcfacf05df59f50d5c75253895b7402593e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains references to the same redirector and benign-looking Shopify URLs, suggesting a lure to a malicious site. 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=gout+diet+sheet+bda In PDF document text
    • http://files.rutherfordmemorialumc.com/uploads/1/3/2/3/132302855/walalebavepal.pdfIn PDF document text
    • http://files.mtolivetofperry.org/uploads/1/3/2/6/132680808/81eda9.pdfIn PDF document text
    • http://files.americaimproving.com/uploads/1/3/0/8/130814057/1678866.pdfIn PDF document text
    • http://files.belmontpianoacademy.org/uploads/1/3/0/7/130775675/ninid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6329/5654/files/duzusod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/89218614627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/labrinth_jealous_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1654/2632/files/65576683235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/belk_theater_at_blumenthal_performing_arts_center.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/62289824438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/521331066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/arduino_sensor_projects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/free_illustrator_templates_for_infographics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/14657243979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/52768265605.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBC 4732 bytes
SHA-256: bf85547af95e73f41fadd5033b73a67770396baeb19be389e5a5a59744e3366d
font_01_sfnt_off00007be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE0 11084 bytes
SHA-256: 8211fd03012eb56c8f98ddf6aac25c0ec59a40fb21aa822f14f8b0a7d3f005ee
font_02_sfnt_off0000a13f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA13F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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