Malicious PDF — malware analysis report

Static analysis result for SHA-256 12cfee9b52fd5a48…

MALICIOUS

PDF

62.0 KB Created: 2020-08-17 10:22:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9df463ef2c874f9d3a373e21578bc810 SHA-1: d4d81af799c2b141ffa0df5344784e58bb9c5fe8 SHA-256: 12cfee9b52fd5a485e856ad5a22255cd206325a62e7cc9e35564076acc0a195e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains a reference to the same redirector URL, suggesting a phishing or scam attempt disguised as a free download. The ML classifier also strongly indicated maliciousness.

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=greased+cookie+sheet+meaning In PDF document text
    • http://files.cl-projects-sound-design.com/uploads/1/3/0/9/130969614/sugukosunezalad.pdfIn PDF document text
    • http://mamapoz.insidenanaskitchen.com/uploads/1/3/2/7/132740900/tefurag-rerewifevatip.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/1/0431/2681/6932/files/type_casting_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/696549843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/malayalam_movies_2016_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/marawaguti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/tubuditulamiviri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/duvefusore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6302/5559/files/texas_dental_jurisprudence_exam_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/bandeya_song_video_free.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 4

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_off0000a847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA847 5204 bytes
SHA-256: e788b1a1704ef8b3e3768d1ebf826d31fcfc12f5cbc10201cd1e2fd896430005
font_01_sfnt_off0000b9cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9CF 10352 bytes
SHA-256: 8952ef2731508a8e9d45adc3d9e87fb4b2d4c62efe0d9ca1472c874a20e4e901
font_02_sfnt_off0000dd2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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