Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad9b393882a3305…

MALICIOUS

PDF

39.8 KB Created: 2020-08-05 15:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2864ef6c78ecdd20fa5ac30a85d64a59 SHA-1: 5c91b3a6a0a41a8065e57d6cbf2c04e4e2936dbf SHA-256: 8ad9b393882a3305383bc681408d869303ce2acd6bf1af347b59c9f8f1a46698
194 Risk Score

Malware Insights

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

This PDF file contains embedded links that redirect to a known malicious domain, ttraff.ru. The document body, though heavily obfuscated, appears to be a lure related to 'problemas de angulos entre paralelas pdf'. The presence of numerous external links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to drive traffic to the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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=problemas+de+angulos+entre+paralelas+pdf In PDF document text
    • http://files.xoxoperformance.org/uploads/1/3/2/7/132710704/194917.pdfIn PDF document text
    • http://files.peaceofmindbodysoul.com/uploads/1/3/1/1/131164239/16a31d.pdfIn PDF document text
    • http://files.paintthetv.com/uploads/1/3/1/1/131164431/budirujumawabaz.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/1/0431/5106/5243/files/70427255582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/53514727925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/dijajodalapuzatod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9525543421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/widewakosekoxuras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/0_soda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/92261944387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/78123949161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9085/4566/files/poruko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/github_permission_denied_publickey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/wafejewixufebibujosomak.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 7

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_off00005a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A75 5504 bytes
SHA-256: 0e573d9f21778d8715063bb1860ba97aa0a315de37cce7517476841a4ba85e67
font_01_sfnt_off00006d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D07 10912 bytes
SHA-256: 67c0b026cbabcb02acd27909dfa02bcb9c6ecde1bac1329360797adca0b369a8

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