Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6380892c6a11f1…

MALICIOUS

PDF

40.2 KB Created: 2020-08-06 21:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8ab607c0ef1e360ef8e9bbd9914c4fd SHA-1: 19d9c697e68fb5fb3b2888365626a08c3d35739c SHA-256: 0a6380892c6a11f119cd2f284a278430971defe174307e29a9b91a507a1080e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to an SEO redirector infrastructure. The primary redirector URL, 'https://ttraff.ru/pify?keyword=calcitonina+y+parathormona+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains this same URL, suggesting an attempt to lure users to malicious content through a link farm. The presence of many benign Shopify links alongside the malicious ones is a common tactic to mask malicious activity.

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=calcitonina+y+parathormona+pdf In PDF document text
    • http://files.lochletter.com/uploads/1/3/0/8/130814423/7d62223a.pdfIn PDF document text
    • http://files.luxefamilyholidays.com/uploads/1/3/1/0/131070291/mojuxatis.pdfIn PDF document text
    • http://negave.javapandit.net/uploads/1/3/0/7/130738970/a2e8aadc7390.pdfIn PDF document text
    • http://files.terrraofwyoming.com/uploads/1/3/0/8/130815277/bosal.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/1/0434/4751/7341/files/forimiwuzibinujorinodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5376/files/english_grammar_notes_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/31567953436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/33714953874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5285/files/gosijipoxonopejitajixokad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7620/files/16932965222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3829/files/tosesoxatede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/filagixupebukatiwij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/zizobiwusuwusaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/kepugakenazapuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/2724745765.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
🗂 Part of campaign: oldgoatlures.com 6 samples

Related samples 6

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_off00005f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9C 5224 bytes
SHA-256: 6eac4d138fb6936fe16420bda77aac718541b30bb1915aa5115e360776fd4b75
font_01_sfnt_off0000713b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713B 10128 bytes
SHA-256: 7e039b96a626f3c4dfc79b0d78e302879938ada1d221adc434aca03beaf99285

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