Malicious PDF — malware analysis report

Static analysis result for SHA-256 1215a3737c062f43…

MALICIOUS

PDF

45.7 KB Created: 2020-08-26 12:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52d9cbc905a97946808b353d5de3958a SHA-1: b8871db0bc91496b5ecd62e2c8c027e5b5b0b47f SHA-256: 1215a3737c062f43054c12968179eae9f7f68e21dc4c8148e39e6b7ea308ebb2
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector at `ttraff.com`. The document body and heuristics suggest a lure for free audiobooks, likely leading to a phishing or malware download site. The presence of embedded URLs and the ML classifier's high confidence score indicate 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.com/pify?keyword=download+hitchhiker%2527s+guide+to+the+galaxy+audiobook+free In PDF document text
    • http://files.jerseycarpets.com/uploads/1/3/2/7/132741352/bafixumidokatepe.pdfIn PDF document text
    • http://files.tormonbrothers.com/uploads/1/3/0/8/130813428/9326171.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/1/0432/2862/7107/files/48597104727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5920/6558/files/cadette_girl_scout_badge_requirements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0947/2669/files/favupisetisukipopubumeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/bitmap_example_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/batman_arkham_city_dlc_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2480/9116/files/attendance_management_program_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27984898694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9299/6250/files/the_human_brain_book_rita_carter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5029/9555/files/adverbs_of_manner_worksheets_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1917/2000/files/guide_de_conversation_franais_allemand.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
🗂 Part of campaign: tormonbrothers.com 3 samples

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_off000069f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F8 5780 bytes
SHA-256: 88187e047e22fec29e1401873e64bfa510c847185b0e5a7f620dc487a436016a
font_01_sfnt_off00007dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC6 13928 bytes
SHA-256: 0c635df64af85da9310023ffaea81395373c27294d503d23afa20161ea9eb989

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