Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdbdffe139640727…

MALICIOUS

PDF

53.7 KB Created: 2020-08-07 22:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54a40dfcf6afbd97d20824f029e3bb7e SHA-1: 9ecec63d79e91963f1298702c749d90664e85e31 SHA-256: cdbdffe13964072787d0c0cc17bf0bf4aa82c35e163f91ee30cc70c1353704f9
194 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to direct users to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=sand+blasting+process+pdf. The document body itself is heavily obfuscated and appears to contain junk data, but the presence of numerous external links, many pointing to Shopify domains with numeric slugs, indicates a SEO-based link farm tactic. No scripts were extracted from this sample.

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=sand+blasting+process+pdf In PDF document text
    • http://files.carolinefconway.com/uploads/1/3/1/3/131397996/e80fbfc840f.pdfIn PDF document text
    • http://files.faddabs.com/uploads/1/3/1/3/131398022/c6bdaf605b16.pdfIn PDF document text
    • http://files.nexttonaturefarm.com/uploads/1/3/0/8/130814345/4517779.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/1/0433/1634/7035/files/72566519621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/24_hours_to_seconds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/vindictus_tier_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/masubuzan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/biosynthesis_of_fatty_acids_and_triglycerides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/88041455444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/sakalivetetidedoxinetopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/7903042805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2425/2071/files/82382933698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7065/1542/files/zukupadolakaxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4755/9066/files/china_australia_free_trade_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/mega_man_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/wevowevatigijinomasotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/18412846449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6292/6229/files/jewivexeburonifu.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 3

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_off00009434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9434 5568 bytes
SHA-256: ba30a6eafece6a86ed13cc1ca3d7b28dc198f8e12ffe7d95bd2950753667a3bf
font_01_sfnt_off0000a730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA730 10104 bytes
SHA-256: 0d60683e6fb5ee80449d123195e60b6ab4c12564dda602b6174b13f8ba7b457f

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