Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7fea99d0b23c38…

MALICIOUS

PDF

51.0 KB Created: 2020-07-28 19:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b54a05a6a3cc48a5142ff061a8038829 SHA-1: 48ab8720bc9b395e8f62ad20dec0aa5d5cf3e9ab SHA-256: 3e7fea99d0b23c38db5f895cec5d8cfd2cb3c7b9826615f413821b6dba55928c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=ezreal+guide+s8+mid'. The document body is heavily obfuscated, but the presence of the URL and the heuristic firings strongly suggest a malicious redirection attempt, likely for SEO poisoning or phishing.

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=ezreal+guide+s8+mid In PDF document text
    • http://files.freshoutofstorage.com/uploads/1/3/1/0/131069859/a2da319da97.pdfIn PDF document text
    • http://files.valleyliberator.com/uploads/1/3/1/6/131606035/padavosagog.pdfIn PDF document text
    • http://files.tdshappyfaces.com/uploads/1/3/1/4/131453745/vonoxekezores.pdfIn PDF document text
    • http://files.ludlambrass.com/uploads/1/3/0/8/130874520/vamulirezisitoj.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/xoxolesusoziviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/wumevadunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/53369760936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9870/1977/files/seninegipatere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/movodaweramakotopovabara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/butiwugewonokipefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5239/9773/files/towovejefexokogugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/guwaxubix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9186/0379/files/84389564889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/xisedejup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/58294851848.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_off00007ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA0 4932 bytes
SHA-256: 2c74941aec5cc12620e035b8f724a68712ef0d908c7beef825c36a51ba0ebe9f
font_01_sfnt_off00008d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D59 16196 bytes
SHA-256: 81e6ca1db252935176f8f4de878d4a953eb076f3a2cdea0ad71997d38b13303c

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