Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6c198848012d4d…

MALICIOUS

PDF

45.4 KB Created: 2020-08-21 16:58:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51b85634ae8801d918bb16429e283131 SHA-1: 063e97270bfa8ce3b16e89d79b0f95f1ea340e0f SHA-256: df6c198848012d4dfdc974e0acbf99ebf3b5010864bc5236768f6d824eb4f49a
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=comatose+piano+sheet+music'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, likely used to mask the malicious redirector. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=comatose+piano+sheet+music In PDF document text
    • http://sikajasif.workingwordsproductions.com/uploads/1/3/2/7/132710714/6834442.pdfIn PDF document text
    • http://files.glowfaceclinic.co.uk/uploads/1/3/1/6/131636954/5851360.pdfIn PDF document text
    • http://files.4s5g-cbd.com/uploads/1/3/0/7/130775108/3562252.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/1/0431/9870/9918/files/5375871901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/69686490167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/97355606509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/mastering_chemistry_answers_chapter_17.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5502/9141/files/ahsanul_bayan_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/technical_writing_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/66290731670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/print_advertising_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5732/3933/files/49738053309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/pemibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3282/files/jenufaf.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_off000075b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B8 4948 bytes
SHA-256: 7b60bfa990ed086bb4eeba0b39e6ee0fcc455872015456c1b1004d1d22ed238a
font_01_sfnt_off00008663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8663 10120 bytes
SHA-256: cd783289f98709032f44b31ea44fef04873f33a31894ad12c77b10a9e9f8277b

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