Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c68e243233fe3f…

MALICIOUS

PDF

33.9 KB Created: 2020-08-06 19:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d1ccef2572b71e247a011d0adb55e83 SHA-1: a5119e6a6993bcafe911e7dd54ce41bfc79faf7e SHA-256: 49c68e243233fe3f33272c9ed5ae35d5cd081b644fce9afcdba1a37dd7fe0a1c
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous URLs. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.ru), suggesting an attempt to lure users to malicious sites. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing this finding. The presence of many Shopify-hosted links, while some are benign, is part of the overall link farm strategy.

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=materiales+ceramicos+libros+pdf In PDF document text
    • http://files.alisonjonesdentistry.com/uploads/1/3/0/8/130874218/9969473.pdfIn PDF document text
    • http://files.emilykearnsphotography.co.uk/uploads/1/3/1/8/131856757/vufogog.pdfIn PDF document text
    • http://bejare.benandrewsconsulting.com/uploads/1/3/0/7/130775195/0db3fb71784da.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/1/0434/1733/8005/files/three_days_grace_pain_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/sadilanubotudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7292/1503/files/discord_server_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9892/3427/files/95467337733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/37838529852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/mini_international_neuropsychiatric_interview_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/remajebewigajezupuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/nelepesafolopufonanamaweb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/35811032846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3759/5560/files/63501694465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/jumulemibodutif.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 2

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_off000043f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43F8 5448 bytes
SHA-256: d3515eaa3f0719624bbb9912ba638b66b8867512f7c19a8a13f298014974f84d
font_01_sfnt_off0000566c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x566C 10776 bytes
SHA-256: 9e116109ba9272487215d19242374606336a940f38bd9dcb4ae1e7325e685ddd

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