Malicious PDF — malware analysis report

Static analysis result for SHA-256 199fdeff639e545d…

MALICIOUS

PDF

45.7 KB Created: 2020-08-17 15:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e43d10eaeb702d2e06403a507657016 SHA-1: ebf1ace0aa7d1bacddfd711783122bf7022505c5 SHA-256: 199fdeff639e545d13770372904472c271058c517081f5a43a299c8a88371180
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure. The primary redirector URL, https://ttraff.ru/pify?keyword=byomkesh+movie+series, is identified as malicious. The document body, though heavily obfuscated, contains references to the "Byomkesh movie series" and the redirector URL, suggesting a lure to entice users to click on the malicious links. The presence of a large number of external PDF links also indicates a link farm or SEO poisoning attempt.

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=byomkesh+movie+series In PDF document text
    • http://tenixabe.christ-presbyterianchurch.org/uploads/1/3/1/3/131379992/504a59.pdfIn PDF document text
    • http://files.pinchalog.de/uploads/1/3/2/7/132712093/40a6d28054.pdfIn PDF document text
    • http://files.viktorcage.shop/uploads/1/3/1/8/131871704/c2b236.pdfIn PDF document text
    • http://files.avianoreunion.com/uploads/1/3/0/9/130970022/6cce6ccd79358de.pdfIn PDF document text
    • http://files.petervinthagen.com/uploads/1/3/1/0/131069987/zozudu.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/1/0431/1787/1255/files/70892730577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1796/0604/files/58398595477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2011/3304/files/oxford_bookworms_factfiles_stage_3_the_usa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/pukalazotokibew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/23865787197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7786/8443/files/limakoguke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/67473394177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/bovamadagobixukexirikobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9013/0584/files/behavioural_theory_of_counselling.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_off00007632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7632 4956 bytes
SHA-256: 1ccad1fe096b938d4a305605b7c2bb5d1dd3b34eafc3ac2830a0378df388f091
font_01_sfnt_off00008700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8700 10256 bytes
SHA-256: d2274c610416fc166c9757d5a7a3102015ce2019086013faf797cf9c92154190

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