Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff04b94c3d7d2f81…

MALICIOUS

PDF

39.9 KB Created: 2020-08-10 14:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f484cd96cf10ba54cb1ce868a471c58 SHA-1: 01d624927b8c5a77fa1c453b86b4aa533549fca5 SHA-256: ff04b94c3d7d2f81765b5377e2a803af5027a6bf524a9c13b741e47e62b82661
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.com'. This suggests the document is designed to lure users into clicking malicious links, likely as part of a phishing or scam campaign. The ML classifier strongly supports the malicious nature of this PDF.

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=cross+sectional+anatomy+brain+pdf In PDF document text
    • http://files.fourmotion.com/uploads/1/3/0/9/130969160/64128.pdfIn PDF document text
    • http://files.fosterenterprises.com/uploads/1/3/1/6/131607010/6bdba812daef.pdfIn PDF document text
    • http://bekasojil.heartworkbirthservices.com/uploads/1/3/0/8/130814124/3746314.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/1/0439/3605/5454/files/93705966666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1772/2280/files/14304977113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/jolegiroxato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7549/4300/files/etiology_of_tb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/data_envelopment_analysis_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8397/2256/files/worozixitafudukasorafije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/zuzogakewemepujowin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/mufaforupokufuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8787/2671/files/sms_tracker_login.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5883/9203/files/97105460609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/gowen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/61011191757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.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 5

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_off00005f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F33 5448 bytes
SHA-256: 90a9a05e3ab00fc8b4dfc2c348338937e7ee6369e27b1512c5ada6824f5797de
font_01_sfnt_off000071a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A1 9644 bytes
SHA-256: 92cddc5b7e34c67878e51fa41a3c008c1138ba5b364da9e7a27cbe19d5092d8c

Open this report in the interactive analyzer, or submit your own file for analysis.