Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0ba2d8fb17fa63…

MALICIOUS

PDF

35.5 KB Created: 2020-08-23 15:39:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea0dd440d4603a9e76572b0592ea0c7f SHA-1: 87e02ecbd75d6c6238c255e704764bc7bed1604a SHA-256: ab0ba2d8fb17fa635b6575647285656a4fbaab3342e7b2bce4e5f993981b83ec
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is characteristic of SEO link farm abuse. One critical heuristic firing indicates a direct link to a known malicious redirector at 'ttraff.cc'. The ML classifier also strongly flagged this PDF as malicious. The document body text is largely obfuscated but contains the same URLs found in the heuristics, reinforcing the malicious redirection attempt.

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=dress+in+formal+attire+crossword+clue In PDF document text
    • http://files.humanrightskcsj.org/uploads/1/3/1/4/131452800/sanirolix.pdfIn PDF document text
    • http://bajoko.reefelaf.com/uploads/1/3/1/4/131406665/vopirijovafubetapab.pdfIn PDF document text
    • http://files.saluseducation.com/uploads/1/3/1/3/131380847/lijikajojipulijole.pdfIn PDF document text
    • http://dozuku.irishwolfhounddog.com/uploads/1/3/0/9/130969754/6836394.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/1/0437/0425/4615/files/4986043988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/bawuridefile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4636/1505/files/dozanav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/rijebenelulewoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/fegufomotipovukapaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/95180824383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/juzuzixajewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1262/0447/files/rimagotutovopekitarudip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/27244434559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/tdap_in_pregnancy_cdc.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 2

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_off00004cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB0 5256 bytes
SHA-256: 098a17ce19d97b8c212409cde6436ede1daf5f2878a568ffa9728077129b08fd
font_01_sfnt_off00005e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E87 10120 bytes
SHA-256: 467010d78a0c1a59d09142a4c0ac3878a1afbbf1b75a1d283df3fbe8eec6b95d

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