Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0590e9c3f48e2a8…

MALICIOUS

PDF

46.8 KB Created: 2020-08-07 07:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4930344635ba54aa5ab265ac2d9c4515 SHA-1: dc686cbf5119abcdba50f89b7938a3ef7f5b7b2b SHA-256: d0590e9c3f48e2a8a32d2b7c29568f90464c336436c9eabf392371f6bc659111
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body and embedded URLs also indicate a lure for a 'pdf editor online free no download', which is a common phishing pretext. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or a phishing page.

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=pdf+editor+online+free+no+download In PDF document text
    • http://files.iscebs-kc.org/uploads/1/3/1/1/131163561/9088835.pdfIn PDF document text
    • http://files.fitznells.co.uk/uploads/1/3/1/0/131071035/jaxiguliw_nusabovafedine.pdfIn PDF document text
    • http://fevuxubag.iaymyouth.org/uploads/1/3/0/7/130775350/4352641.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/1/0430/0986/7929/files/26615747427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/37347030182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/69544591361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/pedululimoruzonofote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/69578896299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5578/2819/files/nuwupifixit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2533/8265/files/livre_pour_apprendre_le_franais_aux_trangers_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/agri_economics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/sifowetesiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/rabbit_run_eminem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0196/9820/files/tegepowilobezef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/71011506005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/30074717058.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C5 4816 bytes
SHA-256: fe71478de4bf82fa8307befe765d4765a89906c7522bebe6c44d54c39d08b2e0
font_01_sfnt_off00008a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A49 10696 bytes
SHA-256: 155ba7e1c5b1fd06e44bb65344d94d60553ae703248c4f762d042c4465f4a370