Malicious PDF — malware analysis report

Static analysis result for SHA-256 900283f1d02b8f04…

MALICIOUS

PDF

38.1 KB Created: 2020-08-18 13:04:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db2e7d4bb44619eafa2612a4705c1e89 SHA-1: 2863130e713f1383e51d0de4f586730f123955b7 SHA-256: 900283f1d02b8f04ff748a2835f466506e7f72896909514b1557a23d434735e8
194 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a critical heuristic indicating it's a redirector link. It also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The primary malicious URL identified is https://ttraff.cc/pify?keyword=cold+rolled+sheet+metal+supplier, which likely serves as a gateway to further malicious content. The document body itself is heavily corrupted but contains fragments of the target keyword and the malicious URL.

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=cold+rolled+sheet+metal+supplier In PDF document text
    • http://files.cozmikbody.com/uploads/1/3/1/6/131636775/c65aec319.pdfIn PDF document text
    • http://notini.kaynashministries.com/uploads/1/3/0/7/130775118/nudubefolubo.pdfIn PDF document text
    • http://files.wrm-designs.com/uploads/1/3/0/8/130813837/82ac3721ccbd9d.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/1/0434/6924/2534/files/41170198227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/54562768778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/675573441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/ajax_php_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/62301827315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1460/0342/files/star_vpn_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4100/3432/files/98114306922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/applications_and_uses_of_computer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/lonely_piano_sheet_music_fortnite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/tuscan_leather_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/8435940973.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 4

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_off000057e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E4 5104 bytes
SHA-256: f0173478195e4fd01cfa87598c3d24e997e45f43390a84099af8658eedfc37fb
font_01_sfnt_off00006912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6912 10200 bytes
SHA-256: 6fa4356a6f7f561d40130ba0337a8c969a4b65df681c1738271fa04a338f21e4

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