Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36437d157e625f6…

MALICIOUS

PDF

42.9 KB Created: 2020-08-10 03:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa91e76b867445b8afe38e577908ca3c SHA-1: 5c3658c55c0841b804eeb1386d45707fd89b7014 SHA-256: b36437d157e625f67cd13edb5c15755bb29ce147dad81190b8bf9df984a3255c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to PDF conversion and the malicious URL. This suggests a social engineering attack aiming to trick users into visiting a malicious site.

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=convert+pdf+to+word+using+apache+poi In PDF document text
    • http://files.andrewpoppleton.com/uploads/1/3/2/7/132740413/0701942.pdfIn PDF document text
    • http://files.ishtaryasin.com/uploads/1/3/0/7/130738956/lufowuwabem.pdfIn PDF document text
    • http://files.stillpointcentre.org/uploads/1/3/0/7/130776366/bifinew_jowawuzavux.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/1/0431/9543/3117/files/26604919883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7878/6965/files/nuregu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/51647688713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/tikefatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/18142359805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/23864360609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/lutebusavimavob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/dukexedolulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1112/1057/files/tefogovidukogaxukekirasoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/puposak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/vituma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/96528443982.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 3

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_off000067dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DD 5444 bytes
SHA-256: 8a8564e060b80daafabc923ae3bd4e12056a91ddc900579c6387ce2f87bb8543
font_01_sfnt_off00007a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A72 10656 bytes
SHA-256: e89fe0a5fa17dddfe4913afb1b220016767d0565be4b7c86b6c44b71733dcd16

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