Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8c69d2d926ac78…

MALICIOUS

PDF

35.6 KB Created: 2020-08-15 03:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7727252a4ebbde11b32a26f6cd58dbd SHA-1: 192a99b91dd7f29788825fd5ffb6ef11f98dc502 SHA-256: ab8c69d2d926ac7819a0cb004c0681da8b159d6e6d53bff2eac0fe195fc1bd95
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning model and heuristics indicating it is a malicious redirector and link farm. It contains numerous embedded URLs, with the primary malicious URL being https://ttraff.ru/pify?keyword=manual+air+fryer+philco+saude+inox. The document body is heavily obfuscated but appears to contain the same malicious URL, suggesting the document's purpose is to lure users to this redirector.

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=manual+air+fryer+philco+saude+inox In PDF document text
    • http://beleriza.settlersmuseum.com/uploads/1/3/1/3/131398455/c129685f7.pdfIn PDF document text
    • http://files.glenfrank.com/uploads/1/3/1/1/131164295/sovububi.pdfIn PDF document text
    • http://files.ultraimagingsolutions.com/uploads/1/3/1/4/131453213/2887874.pdfIn PDF document text
    • http://vekekeko.glennwoodhillsretreat.com/uploads/1/3/1/3/131382486/4996930.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/1/0434/4011/1782/files/accelerate_book_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1187/2667/files/tamewugajipuwetozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/tenasorosegonojerivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/31331552486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/76131698760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/bibimipobapixobawiponi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2251/4338/files/b_l_theraja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/texas_sales_and_use_tax_exemption_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/32889126042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/sededaruvosemizum.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 5

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_off00004a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A27 5416 bytes
SHA-256: 801c4c450c0451f5732a28cc7b97172d2c8be944431501b451468d559a28ba69
font_01_sfnt_off00005c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9A 10888 bytes
SHA-256: 9b85f72e8ec2b3467a0d2617f369b6e68a2733826ce2cd874f4ccae55a95498d

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