Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c7bcb403e564004…

MALICIOUS

PDF

38.7 KB Created: 2020-07-25 12:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecfd7e175bc06ea9c78643f5730074ce SHA-1: 3648473d0020bb5e9cfddf6f7372d242e94c4b4f SHA-256: 2c7bcb403e564004e52b296fa823b8eefff1e7d263abeb5d9b2a885c284680d3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for a lawn mower manual. This suggests a phishing or malware delivery attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports the malicious 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=briggs+and+stratton+450+lawn+mower+manual In PDF document text
    • http://files.festivalontheave.org/uploads/1/3/0/8/130813301/mutobexud.pdfIn PDF document text
    • http://files.diofdl.org/uploads/1/3/2/8/132815172/busogawaviwij.pdfIn PDF document text
    • http://files.greaterpittsburghquickcash.com/uploads/1/3/2/7/132740482/5865196.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/1/0431/3687/6695/files/kerafenebenotadozura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/70024029155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/61121295968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/tulimaxemivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lurexemip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/dasasotirepenefefavamuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/45413501883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/94814299311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/72304268144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2252/4326/files/97989333247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5557/files/kafut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/4033909619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6662/2105/files/65192291187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/samojusinokuzen.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 4

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_off000058ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FF 5524 bytes
SHA-256: dabc08e9ac210d7aa286c7924db86bcf0896c9fcbc166966edae41c13411d3d4
font_01_sfnt_off00006bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 9812 bytes
SHA-256: cec7ff5b55043b795bda7f79c8f1e811cb0787bfa43de1433c0aa4fdf08e061a

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