Malicious PDF — malware analysis report

Static analysis result for SHA-256 f30f0152a6daf6da…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 17:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f4b19e7f6feca0a7c2c2972cb0ed82b SHA-1: 9916b3393b7e5092f7e03844c978d93b6927a725 SHA-256: f30f0152a6daf6da5affaa63fb2334c5976f6fb33a0d67b4dd87bbf5d22e2b68
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=brain+gym+%25C3%25BCbungen+f%25C3%25BCr+erwachsene+pdf, which is presented as a link to a 'brain gym exercises' PDF. The document body is heavily obfuscated and contains embedded URLs, further supporting the malicious redirector intent.

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=brain+gym+%25C3%25BCbungen+f%25C3%25BCr+erwachsene+pdf In PDF document text
    • http://files.simplifycoaching.com/uploads/1/3/1/4/131406149/e2c26ea09.pdfIn PDF document text
    • http://files.ohioadolescenthealth.org/uploads/1/3/2/7/132740905/856f4f516e034ea.pdfIn PDF document text
    • http://files.safegrowth.org/uploads/1/3/2/3/132302872/1698222.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/1/0437/0392/6939/files/2639712524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1940/2397/files/fokezewiretililatiran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1370/9730/files/63694632167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/dovijivaked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/79411281035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0521/2832/files/vasedovepetekokesikaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/aicha_cheb_khaled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/36942879974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3951/5039/files/jorevefoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/tubing_bender_harbor_freight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1108/3160/files/watch_batman_v_superman_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8649/6415/files/martial_arts_pose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/2877667136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8179/2664/files/mujuxerob.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_off00006814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6814 6040 bytes
SHA-256: be1885a9d75d01f409389bef930af32320dd643f2fb0858d9dde0d684e1161fa
font_01_sfnt_off00007c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C57 10900 bytes
SHA-256: d13be50390d71905a9aa563b2b14965d20a55ea31c3ef7e36c79ef9cf9725310

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