Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d60756cbbcd65eb…

MALICIOUS

PDF

49.2 KB Created: 2020-07-30 00:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: caa536471fe4691d10054bab854ed94e SHA-1: a300181452f09c3d29cfb3534927290e34d6ccde SHA-256: 4d60756cbbcd65eb37216bf47259eca65326bc7ce63d7f2394a17aa4922b04c7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, forming a link farm. One critical heuristic indicates a PDF redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to veterinary anesthesia, likely a lure. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=lumb+and+jones+veterinary+anesthesia+and+analgesia+pdf+free In PDF document text
    • http://files.hcpracticeathon.com/uploads/1/3/0/7/130740298/vanuweg.pdfIn PDF document text
    • http://files.kimbrulay.com/uploads/1/3/0/7/130775046/bajem.pdfIn PDF document text
    • http://files.coverstoryband.co.nz/uploads/1/3/1/0/131070152/81f6967d7dcc877.pdfIn PDF document text
    • http://files.rebeccalynnphotography.net/uploads/1/3/0/8/130874518/4840188.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/1/0437/1913/1285/files/40755887086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/47984108213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/wesatevotitefuturux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/mopexikuwuneluso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/golojolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/rumiwizuzolim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/70602606091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomekanob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/76930681881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/dadevexunusidesuzaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/kizebilorofanerafis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/44291694872.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_off0000815e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815E 5656 bytes
SHA-256: 1b725b8c9da4ea92c8058b6a31b5fbc3a8b41b45d176e2cc39c689659e80c5f8
font_01_sfnt_off00009480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9480 10124 bytes
SHA-256: b306548ba4aca50398d7495336667f3fd92f4d7d60b4c615d0f2ec6e3f0f1bbb

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