Malicious PDF — malware analysis report

Static analysis result for SHA-256 666d4cb0da811a2b…

MALICIOUS

PDF

51.5 KB Created: 2020-07-29 00:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b2baf5326bc2826b2fb3ca684236cb78 SHA-1: 300cacf614b73b1418dc205b296a4fb971a13801 SHA-256: 666d4cb0da811a2b6736a3a71aafd8e8da8f1e98463bc87643ee44b14d2a3258
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a redirector to known malicious infrastructure at 'https://ttraff.com/pify?keyword=matteo+bandello+pdf'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of many links suggests an attempt to drive traffic to potentially malicious sites, likely for phishing or malware distribution.

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.com/pify?keyword=matteo+bandello+pdf In PDF document text
    • http://files.winstonheinrichs.com/uploads/1/3/2/7/132740586/1de03e16.pdfIn PDF document text
    • http://files.itslearningsupport.com/uploads/1/3/0/8/130814858/1468226.pdfIn PDF document text
    • http://files.rocio-madera.com/uploads/1/3/2/6/132681342/4395982.pdfIn PDF document text
    • http://files.katjasymons.com/uploads/1/3/2/6/132682295/8276184.pdfIn PDF document text
    • http://files.ambientmindfulmusic.com/uploads/1/3/1/8/131858592/gavikuxanezef-gazeleta.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/1/0428/6542/6598/files/warirekimobit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/luzelelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4737/7301/files/xubino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/sevimaxakurorifutun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/42988740598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2344/0792/files/95657822730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/72669846675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/42921251812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/49355778916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0845/0972/files/jezanatujoxekajade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1363/6259/files/tobidabubefis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/83192868282.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_off00008f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3F 4644 bytes
SHA-256: a2f2d894d6486f6bdfc73a981de668ed5a23085fa00b99d6ec283944eeee67c7
font_01_sfnt_off00009f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F19 9916 bytes
SHA-256: 445ee0cb1bd423eeba2d9e3ea283c83f270dada03a294746a066f9210784cf5d

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