Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f1dae54bb352e0…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 14:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af8371e1a9586b86feaee238bf213b74 SHA-1: 21707cd39609a592abf08db775c2b79863905226 SHA-256: f7f1dae54bb352e03255db9df92445f0543c68434c7d7cf2d7b3e31301404dd1
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a piano sheet music download. The document body, though heavily obfuscated, contains the target URL and references to piano sheet music. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a phishing or malware distribution attempt.

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=bittersweet+symphony+piano+sheet+pdf In PDF document text
    • http://files.kingfisherpbs.org/uploads/1/3/1/1/131164273/dirakaxet-gezodirivemikix-jozoja.pdfIn PDF document text
    • http://files.kellysternyoga.com/uploads/1/3/1/6/131607522/2094288.pdfIn PDF document text
    • http://files.photography-timeless.com/uploads/1/3/0/7/130775806/jijijufuwuxub.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/1/0432/3124/8542/files/93073770757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/bomedaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/27981214816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5109/3914/files/update_xbox_one_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/zuxovujonubaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/71941714649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97253363073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/6944069577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/alice_in_wonderland_mad_tea_party.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/pawuzus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/ziposijekeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7836/6872/files/31743089740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8600/4899/files/8369884067.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_off00005863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5863 5492 bytes
SHA-256: 180ab2d45a569ff6d567e01d730bb96b370c9f37112cd378d379af0d81608be2
font_01_sfnt_off00006afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFD 16044 bytes
SHA-256: a4311889aa0b0fcc0e0280154cdbc3af659b11ef25b2299d6b5fa3a223748143

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