Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10efdd5cf3eee48…

MALICIOUS

PDF

41.7 KB Created: 2020-08-08 14:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f92560c30600ccfff9fa019695273fb SHA-1: 320b03c6ec722a358c09dbb4afcc67bb3a0cc71d SHA-256: d10efdd5cf3eee48b89c02827c781958ca865fd2276501418c2ec5ff069d0e70
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=cardiac+arrhythmias+book+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same URL and other PDF links, suggesting a lure to a malicious site under the guise of providing book downloads. The ML classifier strongly supports the malicious nature of this document.

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.ru/pify?keyword=cardiac+arrhythmias+book+pdf In PDF document text
    • http://files.kimlista.com/uploads/1/3/0/7/130739646/tejiromor.pdfIn PDF document text
    • http://files.yogaforbighearts.com/uploads/1/3/1/8/131856079/49f72c871d4.pdfIn PDF document text
    • http://files.cuaahumboldt.org/uploads/1/3/2/6/132682607/8335126.pdfIn PDF document text
    • http://files.statenislandsolarcar.com/uploads/1/3/0/8/130814110/1093972.pdfIn PDF document text
    • http://files.leedsbarber.co.uk/uploads/1/3/1/4/131438137/f50018.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/1/0430/6858/8194/files/jojolidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/71969636494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/pofopoxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/wasapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/mujumesotatetejanowinijel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/tajutulavepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/12180391728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0089/7440/files/vifigimakiwezoxusixegez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/28269034698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/8254040611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/haku_dragon_spirited_away.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4631/files/54530390720.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_off0000638d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638D 5572 bytes
SHA-256: ea56684f1c1dc6eb320059ce772c5e73d9d72d0c0ebf321f8c137ae44665d8d5
font_01_sfnt_off00007657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7657 10540 bytes
SHA-256: c52a367a89108a2f2549bfca69e46709636cb1d347604466f6dd771f4131b7dd

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