Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5c31b908a2d31b…

MALICIOUS

PDF

48.7 KB Created: 2020-08-19 17:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 598345479839e9743bfeb99e864fc118 SHA-1: 361ea72ca90a3f002b733793add1f8f72b5bdebf SHA-256: 7e5c31b908a2d31b607e99e7d1ffd220655fd16dce22f0ae423b3811a2206653
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The primary redirector URL, 'https://ttraff.ru/pify?keyword=neoclassicism+definition+pdf', is explicitly flagged as malicious. This suggests a phishing or scam attempt, likely using SEO tactics to lure victims into clicking through to malicious sites.

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=neoclassicism+definition+pdf In PDF document text
    • http://juket.wompostcoop.com/uploads/1/3/1/4/131454762/bukojo.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/1/0434/6026/4086/files/56187728385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/mowokitulon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/59453996335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1386/6389/files/kukudowofarikijox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/final_fantasy_tactics_psp_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/logical_reasoning_practice_questions_for_cat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/definicion_de_contaminacion_ambiental_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/60916129967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3728/6815/files/naruto_op_13.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/55819667870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8221/0725/files/gatomugegamasifegozasis.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_off000082c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C1 5176 bytes
SHA-256: 74fb8b9d0cde7dc8783b18b35b8af88aeaf454c7dde16ccff94cbd17e62a856e
font_01_sfnt_off0000944c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x944C 9832 bytes
SHA-256: 537786cd1dc4de7b8c683c1b37c6870d0fed51140fce48e9eeca639ca56b8ad5

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