Malicious PDF — malware analysis report

Static analysis result for SHA-256 37150335e441cd1c…

MALICIOUS

PDF

56.5 KB Created: 2020-07-30 23:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bac0b0fce454fe38c80d51b4bca1f08 SHA-1: 912e36904c4fd60cc6aa3d25adae196935908652 SHA-256: 37150335e441cd1c326b5912a9f08fcfdd50a84fe57bec6527b02c2d05706507
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though heavily obfuscated, suggests a lure related to 'areas of shapes' and includes metadata indicating it was generated by wkhtmltopdf. The presence of numerous external links, including those to a redirector, strongly indicates a phishing or traffic-driving campaign.

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=areas+of+shapes+pdf In PDF document text
    • http://files.micpr.org/uploads/1/3/0/7/130739519/sogizivonozalexira.pdfIn PDF document text
    • http://files.woodyshticks.com/uploads/1/3/1/3/131379612/ritozo_luwubuvilul_bizifodoli.pdfIn PDF document text
    • http://files.raychellemuhammad.com/uploads/1/3/0/8/130815140/vekozezezevegoj-naparemoku-zurefuso.pdfIn PDF document text
    • http://files.campmiller.com/uploads/1/3/1/4/131453214/1083258.pdfIn PDF document text
    • http://files.redemptivedivorce.com/uploads/1/3/0/8/130815664/462976.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/1/0433/7431/3621/files/66099736486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/88730216732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5373/6348/files/rodifenarudomejedoson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1384/8731/files/14655760666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6874/9979/files/voridu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/suxitoneposibolitijen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/49998285923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6626/9597/files/ninukokomisifovunimapuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8879/8111/files/36244717666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/lulujowaxagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1993/5655/files/mosisovadawawuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/8596016055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/87255118214.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_off000095cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95CF 4640 bytes
SHA-256: 9838452ae8e7a6597ee4922de14a4ad32cd9c4bc3ed81f7b746f68294179be24
font_01_sfnt_off0000a59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59A 15100 bytes
SHA-256: cf007f1103257ac037ab564c7d6e17271cb5c81596f90e040c36c73700a53afc

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