Malicious PDF — malware analysis report

Static analysis result for SHA-256 d57f391f93edb8c0…

MALICIOUS

PDF

39.7 KB Created: 2020-08-07 05:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaa0fb27ca250f604af115ca02c30f79 SHA-1: 579a870e24fc2d793981f629cfcfd2e1ae166773 SHA-256: d57f391f93edb8c08746c052ee23b4e925f2891a37e3025f6415831947de16f3
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is part of a link farm strategy. The document body, though heavily obfuscated, contains text related to 'Catalogo avon c 17 pdf' and the malicious URL, suggesting a lure. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to potentially harmful 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=catalogo+avon+c+17+pdf In PDF document text
    • http://files.sincerusgroup.com/uploads/1/3/0/8/130874520/tezotenamunagij-wosofiwi-laxotuxod-ragunit.pdfIn PDF document text
    • http://files.hellogorgeousre.com/uploads/1/3/1/0/131070561/ligizaki_pafigutowag.pdfIn PDF document text
    • http://files.ratiocoffee.ca/uploads/1/3/1/6/131606453/62d13aae3.pdfIn PDF document text
    • http://files.ms-r.co.uk/uploads/1/3/1/1/131163788/fasiriw-vevaso-senujiz.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/1/0428/9835/8432/files/vinujavezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/75176971395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5333/5207/files/21886104781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/elcomsoft_ios_forensic_toolkit_cracked_rar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2962/6017/files/mukufepixikamunajir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8428/3033/files/77292119862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/gamiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/fasadivovube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/pituvesarunetavabukotoxu.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_off00005cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD4 5144 bytes
SHA-256: 729553e9d6a40cf41dfca73bb5320a341dd3b4cf1c7cd72d9c74c3c3cfb777f2
font_01_sfnt_off00006e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E89 10488 bytes
SHA-256: d0d396a44c13ae8b3f9297872d322acdbb3f86259674b9651ad95b03702889d0

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