Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f43b7694c65060…

MALICIOUS

PDF

35.4 KB Created: 2020-08-19 00:19:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 55738d3486dcebe685ed05e402904bbc SHA-1: 4f3c2b40c5ecddfd28b88e7d05fa38fc75422df5 SHA-256: 82f43b7694c6506020f3369ced7ad6dcdc80e8c1b96ae260806927e328d549d9
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary malicious URL identified is https://ttraff.cc/pify?keyword=once+falling+slowly+violin+sheet+music, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to disguise the malicious intent. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.cc/pify?keyword=once+falling+slowly+violin+sheet+music In PDF document text
    • http://rokuxep.instituteforlgbthealth.org/uploads/1/3/2/3/132302921/5633737.pdfIn PDF document text
    • http://kivov.rebeccacconklin.com/uploads/1/3/2/7/132710712/pegunegagugu-girozejuka-nubofo-rojewuluve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4350/7615/files/66475158804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/convert_pem_to_ppk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/banefidofekadozimodomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/99472385534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/25379226841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/13134021198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2294/8251/files/83883058866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31178329868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/15626260794.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F48 5364 bytes
SHA-256: 57735eed9c7c700ec3cbd230605f0c6b05b6b6884a8a57fcb32cde580c81c9d4
font_01_sfnt_off00005182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5182 9676 bytes
SHA-256: e0b7a7c6adc188729595848b103062ebfec038e3a7d773ee1f5c66bc2761185c
font_02_sfnt_off000072a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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