Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4416a431da55fd9…

MALICIOUS

PDF

58.8 KB Created: 2020-08-01 15:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d76bfb65e977a0099bd7d3563536bcf SHA-1: 0758a26e78cf71affdc50fd09631c06897ad6a27 SHA-256: c4416a431da55fd96a37b5db7c4673c8a6ed119ca6e3932d17dd0504ab8417c5
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to traff.cc, a known malicious domain. The document body, though heavily obfuscated, contains text related to 'intermediate accounting kieso 14th edition pdf' and appears to be a lure. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to host further malicious content. The primary attack vector involves tricking the user into clicking the malicious redirector URL.

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=intermediate+accounting+kieso+14th+edition+pdf In PDF document text
    • http://files.coplanvineyards.com/uploads/1/3/1/3/131398019/pejejexusudojo-xitefeluvepi.pdfIn PDF document text
    • http://files.crawcainellc.com/uploads/1/3/0/7/130775953/pidudubalofawog_mavezarekegezu_vozagowalixakid_tosax.pdfIn PDF document text
    • http://files.heightsfloraldesigns.com/uploads/1/3/0/7/130775391/wewawasadixiwagobur.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/1/0434/6147/6504/files/27739459319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/tetefis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8362/7686/files/17896541490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/komugiwukikadisan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/64367063668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/6235832938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3990/files/jufenozadutopuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4641/files/80482903276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/jalenisifadunedudawiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/jaxuzapujapumizixoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/dinemabifejedinasukon.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 2

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_off0000a633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA633 5676 bytes
SHA-256: b3f15bcc9ccfd0386cbb1b77c2d0e28fc28746afc9dacb8f2c44e836da729d4d
font_01_sfnt_off0000b96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB96D 10848 bytes
SHA-256: 6ae115ba263e991bb9e684655d182783cc084f3bfae7d271b23270ca7518be9c

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