Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd83bb115e2ac65c…

MALICIOUS

PDF

59.1 KB Created: 2020-08-01 11:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77b8f4d65f1dfc310d403d629f242dc5 SHA-1: 0c4d04128c3cf27fc4815f429ffbdd1f3af39284 SHA-256: bd83bb115e2ac65c68897af8019ca6cc9e732e8c7d330a106212cea1aa804a28
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent URL, 'https://ttraff.ru/pify?keyword=space+marine+codex+2015+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for users searching for specific content. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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=space+marine+codex+2015+pdf In PDF document text
    • http://files.floridafoundationdh.org/uploads/1/3/0/7/130739081/bazamofajipi.pdfIn PDF document text
    • http://files.arrivecollegeconsulting.com/uploads/1/3/2/6/132695491/nezewuzizexoma_suligeja_rorar.pdfIn PDF document text
    • http://files.acroemotionyoga.com/uploads/1/3/0/7/130775503/4800679.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/1/0428/2122/2567/files/dark_souls_winged_spear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/misajisowozodefaludeson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/40748595749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/68464699058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/jetifemitujituvex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/4684620747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/59205980462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69651331918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/5004216126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/76411597621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1189/9545/files/besezuwim.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 4

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_off00009c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C08 5712 bytes
SHA-256: 9a2b661b64e2e50322c8e85edca4dc8c8cde8bf83af2ecfc3e0b0e657633b290
font_01_sfnt_off0000af77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF77 15452 bytes
SHA-256: d72994553c90f26550386ad489923380953cda041a4de7d5c293edf091df0e0e

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