Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae18bf66ed183169…

MALICIOUS

PDF

45.8 KB Created: 2020-08-15 02:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 014f924bf5b72e24bec5c1d41c2943f0 SHA-1: d65f2ea379fe2545e7557f1fd87b5e9c2b396924 SHA-256: ae18bf66ed183169576d80278e175da9c846c77f1c0c0c5356d94bd8192c8eac
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=best+animation+software+for+android+development`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on `cdn.shopify.com`. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL and several other Shopify-hosted PDF links, suggesting a coordinated effort 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=best+animation+software+for+android+development In PDF document text
    • http://files.thermage.sg/uploads/1/3/1/1/131163687/3557336.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/1/0433/9390/8892/files/79254462203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/make_unique_c_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/akademikong_pagsulat_halimbawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/basic_cantonese_words_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/cracking_the_code_by_ayushman_khurana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/masuvokenov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/misovugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/34704216482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/craftsman_radial_arm_saw_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25696514874.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 2

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_off00007466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7466 5388 bytes
SHA-256: 80ea92857d574a9a21be8cb3954469f1c328fb8827454d484204b4b7ae157983
font_01_sfnt_off000086ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BA 10388 bytes
SHA-256: 8f0f131974832b0300f21aa1ab03e44193346abdc621b87d5a3627a053666ec5

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