Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbaf8b13be75117…

MALICIOUS

PDF

55.1 KB Created: 2020-07-27 23:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d589eddd0c4c90ac17e4f8afc7c170d SHA-1: 0095bebdb798e1ab5622e27ea0e747a2ea967e37 SHA-256: 9fbaf8b13be75117ddd73130179d909793a9c9c69be62c4d5a3633c89b8cc920
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, appears to be a lure related to 'commis chef interview questions and answers pdf'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector.

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=commis+chef+interview+questions+and+answers+pdf In PDF document text
    • http://files.coloradowolfandwildlife.com/uploads/1/3/0/8/130813998/788787.pdfIn PDF document text
    • http://files.drreyespulm.com/uploads/1/3/1/3/131398059/8487587.pdfIn PDF document text
    • http://files.yorkregiondbc.com/uploads/1/3/1/3/131381720/5394006.pdfIn PDF document text
    • http://files.captainshreveladygatorsoccer.com/uploads/1/3/1/3/131383954/bikurizejobojevo.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/1/0432/3105/1943/files/lidixagegepuvuzub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/fugokipar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/60776703756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/41717436782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0152/0029/files/53629057483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/mesurotosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6836/4702/files/semeserinufosivukusuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8262/0834/files/28686173094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6883/3436/files/livepabovazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/34666996663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/beziporujilunediwaman.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 7

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_off0000995e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x995E 5544 bytes
SHA-256: 9da83cabf04305eb4e03a3f697e1f228b57904a27a4f94e6e819e1f922001947
font_01_sfnt_off0000ac22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC22 10248 bytes
SHA-256: 1b3d71e9ec2e4c3e39ddd3f480d5f7b705c44b8ce7d614fc00f72ecb8cf128c4

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