Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c75c7c56812a47f…

MALICIOUS

PDF

50.8 KB Created: 2020-08-19 15:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0aaa820a5458429bd0d4f77dd54ca48 SHA-1: 846c4919428904253ded852be89e81862a85f326 SHA-256: 5c75c7c56812a47ffa85436c5b71799cce090180deb1147daa2f2239c15fced3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) disguised as legitimate content like nutritional information or downloadable PDFs. This suggests a phishing or scam attempt to redirect users 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=curly+kale+nutrition+information In PDF document text
    • http://files.ryleyskelton.com/uploads/1/3/0/8/130873895/2993677.pdfIn PDF document text
    • http://files.dreyfus-emerson.com/uploads/1/3/1/4/131438604/dabosimeziga.pdfIn PDF document text
    • http://files.manageyourpain.co.uk/uploads/1/3/1/4/131407887/196a252933.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/1/0431/5473/5264/files/saudi_arabia_map_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3227/9190/files/21258548147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/ammonia_combustion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/11004057389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2460/files/72258796281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/4592213177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0935/files/werewolves_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5432/6179/files/59241766233.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_off00008b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B99 4808 bytes
SHA-256: adc9975502b5708b81ded9c09b53cd3f42f3bec7c0747468d1951ccc1c991643
font_01_sfnt_off00009be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE8 10092 bytes
SHA-256: df892b505c23efcf7c52af73012ec83fac2cee21b2d30e81255c6c3d9a4fc05f

Open this report in the interactive analyzer, or submit your own file for analysis.