Malicious PDF — malware analysis report

Static analysis result for SHA-256 5becb799393d160d…

MALICIOUS

PDF

33.8 KB Created: 2020-08-06 06:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df41591eb394abfb8fd80de41837b19e SHA-1: f567168aa3e1a6cb679d9d517b7b6e44be334c85 SHA-256: 5becb799393d160dbbfd2e4b027a3e48801233adeb04358fc4b4ff0f06481a6a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same URL and references to PDF files, suggesting a link farm or SEO poisoning tactic to lure victims. 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.ru/wb?keyword=performance%20modeling%20of%20automated%20manufacturing%20systems%20pdf In PDF document text
    • http://files.libertyeliasmiller.com/uploads/1/3/2/6/132681690/wiwula.pdfIn PDF document text
    • http://files.myislandmusic.com/uploads/1/3/0/7/130739892/d31720d.pdfIn PDF document text
    • http://files.chickenmullfestival.com/uploads/1/3/0/7/130739084/6564978.pdfIn PDF document text
    • http://files.apdcwa.org/uploads/1/3/0/7/130738673/wawulabuwaw.pdfIn PDF document text
    • http://files.rebalancewithbianca.com/uploads/1/3/1/4/131437523/somabexexa.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/1/0431/8609/4248/files/189687422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/vefodinikase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4722/2422/files/28541224596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/baxukatadatuwakajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/79699574428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/65533522213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/41667997270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/7925105486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/fetujulatozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5655/4394/files/dukajatirowovifudonad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0711/4391/files/welelifijexupudite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/78209489803.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_off000044ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44EE 5576 bytes
SHA-256: c6db73f1d387c3bd7c58d1f1b19f06f4ddd26ca56894de4dde4caa295a68e040
font_01_sfnt_off000057d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D9 10036 bytes
SHA-256: 7c86ef3d28b7686adb38b238eedf87d3bfb097e818b7b1c12f83d3b88f793bb8

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