Malicious PDF — malware analysis report

Static analysis result for SHA-256 684c8de65f714618…

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 16:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a913c9b33d7b5be0b6d7052cf4d485a3 SHA-1: 5d67d551e4535a2327e0fb334b16be95c965109b SHA-256: 684c8de65f71461897d67f4bffd1bf0e5d40ff76386f3282ab4e46ae48e89ed1
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector infrastructure known for hosting malicious content. The primary redirector URL identified is https://ttraff.ru/wb?keyword=engineering%20mechanics%20dynamics%2013th%20ed%20pdf. While some links point to benign Shopify domains, the presence of the malicious redirector and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful sites. No scripts were extracted, but the document's structure and embedded links are indicative of a phishing or scam lure.

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/wb?keyword=engineering%20mechanics%20dynamics%2013th%20ed%20pdf In PDF document text
    • http://files.circleofloveceremonies.com/uploads/1/3/1/4/131438784/9fbced80982.pdfIn PDF document text
    • http://files.hiddennation.org/uploads/1/3/0/7/130739449/1281053.pdfIn PDF document text
    • http://notigave.walkingshadowshakespeare.com/uploads/1/3/1/3/131381204/xanegitazuxixefuf.pdfIn PDF document text
    • http://files.bonnystaufferart.com/uploads/1/3/1/4/131483110/12d92b7af2729.pdfIn PDF document text
    • http://files.eugenemontgomery.com/uploads/1/3/1/4/131438766/zesolabugilobe.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/1/0434/9257/3336/files/beyond_the_sea_piano_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/10517763457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/lp_bronkitis_kronis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/39950121681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/cassava_production_guide_in_the_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/68763065705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/ruzajoxik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/gisaluxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/39028390056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/47783125991.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_off00007270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 5812 bytes
SHA-256: e0c9051b6d5bd0a32c8ac18efca3c2f9b85603adf07c123cdd8966b5dff6744b
font_01_sfnt_off00008610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8610 10076 bytes
SHA-256: cbf5545b8066907ab34e8b0eef0862d42785dae329de391b019f8f70d656ad26

Open this report in the interactive analyzer, or submit your own file for analysis.