Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f413b22c6e9c550…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 03:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b81283964af398388940cae14786e5f SHA-1: 7ee859635a8646115b2b1cc591d7e8d0a1456dfa SHA-256: 0f413b22c6e9c5508dd8eea600d8fa065816b569c0ba50da30812332d49d5491
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 SEO-optimized PDF hosting sites, likely to obscure the malicious redirector. The primary malicious link, 'https://ttraff.ru/pify?keyword=living+among+us+full+movie', is identified as a malicious redirector. The document body also contains this URL, suggesting a lure for users to click on it for a supposed movie download. The ML classifier strongly indicates 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/pify?keyword=living+among+us+full+movie In PDF document text
    • http://bizunadex.neilpresleycox.com/uploads/1/3/0/7/130738799/musigu-tatemu-rokonu-nufegem.pdfIn PDF document text
    • http://files.fancyshmancynotes.com/uploads/1/3/1/3/131398323/8898633.pdfIn PDF document text
    • http://pusaze.cocoonparentingsupport.com/uploads/1/3/1/3/131384260/dopajilati.pdfIn PDF document text
    • http://files.maryicjoseph.org/uploads/1/3/1/4/131453255/ganeki.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/1/0434/7671/3637/files/binomial_heap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/kazudakobofefogisomir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/vaxezolokajurorisape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/42533879428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1402/0505/files/alejandro_jodorowsky_o_caminho_do_tarot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4030/1478/files/gunevetimig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/68624427114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/46531497004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/41814205948.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000621c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621C 4792 bytes
SHA-256: 94355eeee8c72da1a759f5aa18e390a508a9015c9d870be97f12efbdd1385294
font_01_sfnt_off00007257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7257 10596 bytes
SHA-256: 0e95a42eaa206cbccb425b350dcee097ac4b4cefa5abc58242728c088c5a1420
font_02_sfnt_off00009663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9663 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3