Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2441e8b75a1aae…

MALICIOUS

PDF

33.5 KB Created: 2020-08-05 11:54:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 574f6eb5a0c93bc87f0321804101b2e0 SHA-1: 8ddf54c44116a807448ec2c13bb2efc46722917d SHA-256: 8f2441e8b75a1aaed28e58aee41d392184d4ff4e034e4b3a9d1fe523f0f69ae5
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector at 'ttraff.cc'. This suggests the document is designed as a link farm to obscure malicious destinations, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the target URL and other PDF links, reinforcing the lure.

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/wb?keyword=sociology%20a%20biographical%20approach%20pdf In PDF document text
    • http://nidofip.thedoosra.net/uploads/1/3/1/0/131070786/kovogevo.pdfIn PDF document text
    • http://files.milanibowhunting.com/uploads/1/3/1/8/131855992/b16a699.pdfIn PDF document text
    • http://files.monicacarrollart.com/uploads/1/3/0/7/130738836/busonone.pdfIn PDF document text
    • http://files.iwritebookspub.com/uploads/1/3/0/7/130739747/welanu.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/1/0437/6713/6408/files/lojud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2825/6680/files/52781619858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/6256702495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/bihar_tet_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/fuvivigiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/tebiguweni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/bedelix_notice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6523/6895/files/5416954891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/makupefabesuku.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_off000043db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43DB 5584 bytes
SHA-256: 80a15072123696b0f98aa978cc09930d788e32f399d9618fda32a7cce97fccc5
font_01_sfnt_off000056d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D4 10164 bytes
SHA-256: 340682be5cc01a3bf85a7d2c5c5f73fd00cb8a10860081577b510d9f0c9edb32

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