Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4dfc67159296c9f…

MALICIOUS

PDF

37.2 KB Created: 2020-08-16 21:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a1d051f6c6f27df882b88f369297e4a SHA-1: b8666654435bd4f487a86ee5191c51b76196bed6 SHA-256: e4dfc67159296c9ff46e4494612b4a742704de5453bdc090eb3ef7b40e8a03af
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for free sheet music. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicated maliciousness. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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=johnny+b+goode+sheet+music+pdf+free In PDF document text
    • http://files.ericaldama.com/uploads/1/3/0/7/130776451/4cc83cc8bdd.pdfIn PDF document text
    • http://jexudisi.sprucehousingcoop.com/uploads/1/3/1/4/131453495/85edfe94640b4.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/1/0434/5564/3813/files/saresop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/kojuvodamoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/bringing_out_the_best_in_yourself_at_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/kewevipakadesawonup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/sopuziso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/83980798211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/84033097418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/rcub_b._ed_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6381/files/vixuxixuwora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/72177257149.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 1

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_off000044cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44CB 5440 bytes
SHA-256: 1a785b975b25dcea90b59482ab7978998348a1a01f0c44837d0aec5de25cfb35
font_01_sfnt_off00005729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5729 10216 bytes
SHA-256: c17641504ee0edfe510816fb882f1155ab62b1e86eacf684d09ca0ae7b3a0ec7
font_02_sfnt_off00007a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A26 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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