Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4857f641a2a584…

MALICIOUS

PDF

33.0 KB Created: 2020-08-25 20:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a55d70e6160e84ddab8999f73544c11b SHA-1: c35a93c852bea716522ea4bf4e6dfb9125025736 SHA-256: 6f4857f641a2a584845d9e6e4a10b3b8e38c65b924f5f0cb9174e97be271bfcd
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to sheet music and a URL that is also present in the heuristics, suggesting a lure. The presence of numerous Shopify links, some flagged as benign and others unknown, indicates an attempt to blend malicious links with seemingly legitimate ones, a common tactic in phishing or scam campaigns.

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=tchaikovsky+june+sheet+music In PDF document text
    • http://files.michellemorrisonwrites.com/uploads/1/3/1/6/131636903/fizuto_woponexopebugur.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/1/0430/1661/8145/files/bagimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/xumimaramizesakezev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/26034853504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/gowatadebajosefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1841/2451/files/the_coincidence_of_callie_and_kayden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3782/files/7047107561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/segowopalixakivox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3337/0522/files/77413107973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/91778423682.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_off00004440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4440 5160 bytes
SHA-256: 0df97cb0bc90ab55419f8a9154d3bbe1e01d2dab28c8641a73722bd828d1525a
font_01_sfnt_off000055b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B6 9920 bytes
SHA-256: 7d596201a645c6d8716118de3fd9181d3f3caca3b452a82ea57eb6555815936d

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