Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa51ef98d981c1e…

MALICIOUS

PDF

48.4 KB Created: 2020-08-03 05:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9cb6db761ef271f1eacb8348fad2499a SHA-1: 3236d0169b764e1cd1319c31a9fab4594059e547 SHA-256: 7fa51ef98d981c1ecdea33a4e8c6bbaf429ead0517680607ef4f730fe341d014
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body itself contains text that appears to be an error message, likely intended to trick the user into clicking the malicious links. The presence of numerous links suggests an attempt to create a link farm for SEO manipulation or to distribute malicious content through various channels.

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=wrong+fs+type+bad+option+bad+superblock In PDF document text
    • http://files.fiddleheadcellars.com/uploads/1/3/0/9/130969083/92e3c551e.pdfIn PDF document text
    • http://files.nicolemillersandiego.com/uploads/1/3/2/6/132695329/4306227.pdfIn PDF document text
    • http://files.mbmulhall.com/uploads/1/3/1/6/131636677/sikosorigoj.pdfIn PDF document text
    • http://files.sheilabanks.com/uploads/1/3/1/8/131856200/9963369.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/1/0428/2076/3804/files/rewan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/murarakaxezogixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9344/2208/files/ridogifesofolexosokujix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/xududatewejesuzekex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9472/1187/files/90393136569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9570/3204/files/free_light_o_rama_sequences.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/charly_garcia_discografia_flac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/sierra_reloading_data.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_off00006303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6303 5524 bytes
SHA-256: 141de751887a2b0e98847e412435ae7c5865d53c22640458ca3e3ea2365deddc
font_01_sfnt_off000075e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E5 15472 bytes
SHA-256: 66bb7e2405fee3d36868faa77b597ffd195547ee8e84046889899db2c500f4c1
font_02_sfnt_off0000a69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA69E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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