Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f0311b2d5a623e…

MALICIOUS

PDF

40.1 KB Created: 2020-08-06 21:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11b285b67a078c1d4cedc6314293935a SHA-1: 69f860cab3c88fdb5cd5c1ad1ed7a700178a6174 SHA-256: c2f0311b2d5a623e09cfba2456a210722ce82eadde3a9b32f5aa5616d1b820d4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=common+mental+health+disorders+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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=common+mental+health+disorders+pdf In PDF document text
    • http://files.mrscoopersblog.com/uploads/1/3/2/6/132680808/wumidol_bidujuji_korewosuxekuwe_wetabapufi.pdfIn PDF document text
    • http://files.cjsquaredphotography.com/uploads/1/3/1/4/131453245/8b97d50.pdfIn PDF document text
    • http://files.citygroves.com/uploads/1/3/0/7/130739978/9560233.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/1/0432/0316/6370/files/volifefibedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0790/9781/files/georgia_new_hire_reporting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/gapiwunirikinuramodefifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/diwulowesimusag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/gesixorexuxegatin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kikurum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/nvidia_shield_tv_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7149/4554/files/bobenawabogufisik.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_off000060ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AC 5188 bytes
SHA-256: 918baaf68d0df39d298817714f0da87dcef88dd434da5e91154fb131856c7667
font_01_sfnt_off00007217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7217 9844 bytes
SHA-256: 0000ca8cc5c089ac5ceef8558748ac42708bc70e185113637f02c5319be4195a

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