Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c4880fd824e710d…

MALICIOUS

PDF

48.4 KB Created: 2020-08-14 09:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86187f138a3fb66e4dba0f492bfbee1f SHA-1: 3fb4d71a08b8415a19ef0ac12891e59ed1e737e3 SHA-256: 8c4880fd824e710d75e6ce7925ef8e6dee34594a28ec76ffb7bc7ba49cf21deb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which points to 'ttraff.ru'. The document body, though heavily obfuscated, contains the text 'Baked salmon nutritional information' and the malicious URL, suggesting a lure to trick users into visiting a malicious site. The PDF also contains a large number of external links, indicating a link farm, with the primary domain being cdn.shopify.com.

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.ru/pify?keyword=baked+salmon+nutritional+information In PDF document text
    • http://deperi.irabea.com/uploads/1/3/0/9/130969440/sivab.pdfIn PDF document text
    • http://files.viennaartstudio.com/uploads/1/3/0/7/130775310/loxosaripi.pdfIn PDF document text
    • http://zoxoxavo.blisjournal.org/uploads/1/3/1/8/131856158/nadopibetudiladuseb.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/1/0431/0705/7825/files/letavonegabad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/du_bsc_chemistry_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0191/2224/files/fuxigif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6686/5302/files/genetics_neet_questions_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/pdf_xchange_lite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/nawofalekawefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0360/1308/files/tubobevinorumogarufiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2456/1829/files/14262370830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/66764739969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/jivixugejutiziwugobil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8783/3762/files/thinkpad_13_psref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5304/6165/files/job_application_letter_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0509/9675/files/gogobuzubimilimolozeg.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 1

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_off000073f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F9 5168 bytes
SHA-256: 6f46563b850548da9a51a525bd227d07c4b8db1bf890362918b1faaf5673c23f
font_01_sfnt_off00008570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8570 15204 bytes
SHA-256: c94935c63e441ee2aa81ac12f21bd2cbcc48be4512fa538a95f4dad02988b597

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