Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e62039b4b6056a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-05 05:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb344feefbc9d5670f7d47796458fd99 SHA-1: 6af49057ca9655cbc9e5c382429a1c8ec9099c5e SHA-256: d9e62039b4b6056a4919b5279f6bd852a4a157dd18de9a39d21e5c74350a3485
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious by an ML classifier and contains a link farm with numerous embedded URLs. One critical heuristic indicates a PDF redirector link pointing to 'ttraff.com', which is known malicious infrastructure. The document body, though partially corrupted, contains text related to 'architect interview questions pdf' and the malicious URL, suggesting a lure. The primary attack pattern involves redirecting users through a link farm to potentially malicious content.

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.com/pify?keyword=architect+interview+questions+pdf In PDF document text
    • http://files.inspiringindonesia.com/uploads/1/3/1/4/131408942/b78a9384.pdfIn PDF document text
    • http://files.triparrvrentals.com/uploads/1/3/1/4/131484603/nojigubabimi.pdfIn PDF document text
    • http://files.dawnlyndiehl.com/uploads/1/3/1/3/131380627/sapasolezawud_doteb.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/1/0427/8406/3654/files/jofavevipotimen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/46663530909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/2056798034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/red_innocence_and_instinct.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/20865667669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/13421004253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/tepominulolemozuniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/57454237431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0973/5845/files/tajesekimip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/57828061425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6032/0663/files/69202212014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/sakibikotodebobuxaj.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_off0000627e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627E 5268 bytes
SHA-256: 244c121ed1e63a70e1c92fbb6047f9d2e16a7faa75555039fce572d67f82681d
font_01_sfnt_off00007482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7482 10100 bytes
SHA-256: a2f535381147d273174deee1bb84114298077b0336a9274feacf52529ed78a66

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