Malicious PDF — malware analysis report

Static analysis result for SHA-256 f333f7c86b124bc4…

MALICIOUS

PDF

40.9 KB Created: 2020-08-02 16:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dc8aa0648e1b7e70053bde7fae12772 SHA-1: 4cae89d2ed54e8c27acd7d97420c34acdcf4e36d SHA-256: f333f7c86b124bc4e181f222c81c7727b6f2864d82c53f0175a48abeaac749d6
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF link farm containing 30 external PDF links. One of these links, https://ttraff.ru/pify?keyword=primal+surge+mtg, is a known malicious redirector. The document body contains garbled text but also includes the URL and keywords associated with the redirector, suggesting an attempt to lure users to malicious content through a link farm.

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=primal+surge+mtg In PDF document text
    • http://files.midviewfootball.com/uploads/1/3/1/1/131164152/4664465.pdfIn PDF document text
    • http://files.taratraits.com/uploads/1/3/2/3/132303264/zewib.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/1/0429/9282/8579/files/kugewiwupozonita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4062/1222/files/16241601541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/kabakevozokefewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5820/0729/files/sovukojireroluboranuside.pdfIn PDF document text
    • http://files.mesweeney.people.ua.edu/uploads/1/3/2/6/132682829/komime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/4914019140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/ledixunugenopel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8722/3198/files/70563128474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/semozurizowemor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5492/2902/files/kawas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5666/7551/files/31226596489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/xasati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5963/3559/files/np_random_randn.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_off0000610d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 5008 bytes
SHA-256: c8e1c638bf16319527c7c58e1fdbb15f019b13670ccb019134ff99e92183c2bc
font_01_sfnt_off000071f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F8 10968 bytes
SHA-256: 7b365671feac7d6ff6501cdbbd8384b993d7f5a8b7ecff8c317dfc1c434a2b17

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