Malicious PDF — malware analysis report

Static analysis result for SHA-256 5edec998975e55e5…

MALICIOUS

PDF

37.5 KB Created: 2020-07-27 18:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3c13a74e8174c8645826725512464ab SHA-1: c8f0a4ec953146153e51d2b940a42991bbed28cb SHA-256: 5edec998975e55e5224451ac23d070c2123f6bcddacd854b8d53e138a9b93b6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple heuristics indicating malicious redirection and link farming. It embeds a link to 'ttraff.com', a known malicious redirector, disguised as an Android developer job vacancy in Chennai. The PDF also contains a large number of links, many pointing to Shopify-hosted PDFs, suggesting an SEO poisoning or link farm tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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=android+developer+job+vacancy+in+chennai In PDF document text
    • http://files.delsurvey.com/uploads/1/3/1/4/131437017/68030ea4c96c83.pdfIn PDF document text
    • http://files.vicjuniorxcski.com/uploads/1/3/0/7/130740062/4514434.pdfIn PDF document text
    • http://files.storeoutsideyourdoor.com/uploads/1/3/2/6/132682113/pabojeginujilabepax.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/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/wawaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/99923340171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5897/8207/files/97265081693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9304/1059/files/42140047114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/63571535624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7319/1580/files/lizezotuwaxutega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/rivolelorolal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3813/8783/files/luzavopigududupekupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/migirumugufif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/25525576935.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_off00005500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5500 5060 bytes
SHA-256: 730db1711d5cb09a085deb21aef74cc142da37b2ab8636ca904e289dba95a0c5
font_01_sfnt_off0000661f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661F 10240 bytes
SHA-256: ce3808cbd5c605abfdfc21b5a86a4d79373c26172bcb9777c622d92435304a4b

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