Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c57a583f1374213…

MALICIOUS

PDF

64.1 KB Created: 2020-07-27 19:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 351b476ae0a19f4bf3908dde38a89554 SHA-1: 75cb86fd0877333375227e73fe920d9496a69558 SHA-256: 4c57a583f13742136f13b17938397d44e8ca9fc80a088c7cb4ff69e211d0d295
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, masquerading as an episode guide. The primary malicious URL identified is ttraff.com, which is flagged as a redirector. The ML classifier strongly indicates maliciousness, and the presence of numerous external links supports the link farm heuristic.

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=penny+dreadful+episode+guide+wiki In PDF document text
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.pdfIn PDF document text
    • http://files.cjstravelconnections.com/uploads/1/3/1/3/131397927/8677927.pdfIn PDF document text
    • http://files.italiancitizenshipconsultants.com/uploads/1/3/2/6/132681384/9214795.pdfIn PDF document text
    • http://files.sandracohn.com/uploads/1/3/2/7/132740342/6509383.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/1/0433/3387/7915/files/42756649920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/99894910275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/30310409537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/tufoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/56250417628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3189/4944/files/lijedot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1404/5341/files/jejujosuroku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7539/4979/files/tisokezadope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70945418412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/xavuxakufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/tegewofaz.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_off0000bbe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBE7 5268 bytes
SHA-256: 4c7fad702de1b1a2cb2e8dfc60bcd4970a9678a84b3c7a91798812227ab5c1f0
font_01_sfnt_off0000cdf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF1 11100 bytes
SHA-256: a89bd3266806807eb573a805d5d33a915a4eb4cfa5c90b2bd8fd37beced40103

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