Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f32aa4bc6fd36ee…

MALICIOUS

PDF

45.4 KB Created: 2020-07-29 13:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 940e408ee01485a4a19582068c89a807 SHA-1: 56dd9bf6fdd0a777b97dad7c25f8818579436bcc SHA-256: 4f32aa4bc6fd36ee066b3271d7c6018d7e4f97bdc1ddb5ea74692c1d2050d7f7
194 Risk Score

Malware Insights

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

The PDF contains multiple links, with one identified as a malicious redirector pointing to 'ttraff.cc'. This suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'physically based rendering' and 'pdf download', likely serving as a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for 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.cc/pify?keyword=physically+based+rendering+from+theory+to+implementation+pdf+download In PDF document text
    • http://files.bloodsugarbikemagic.com/uploads/1/3/1/3/131398530/jugonas-mejijudofuzode.pdfIn PDF document text
    • http://files.gooroogivesback.org/uploads/1/3/2/3/132303337/8632073.pdfIn PDF document text
    • http://files.silkbridaleaston.com/uploads/1/3/0/8/130814718/kepagesunet-tipet-jixeno-mewokon.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/1/0429/6422/2101/files/viviwus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/51346627960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gerakofidasetivivirodipel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7807/4020/files/bekebixuzinolumozinezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78986196578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/wewobijorixagukiwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/26888983534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7083/2283/files/47498846358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/tatefitolofek.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF4 5692 bytes
SHA-256: 53ddba5b579e94636527dcb76a6fece9920a3438ee274697cce22961f81e5bb8
font_01_sfnt_off00008323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 10752 bytes
SHA-256: ca29742d369fb84271047441d44d9df5af6bd3366bd0d619a7465b2a50c9fcb9

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