Malicious PDF — malware analysis report

Static analysis result for SHA-256 592599733f467b79…

MALICIOUS

PDF

49.4 KB Created: 2020-09-14 23:39:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00ea020748e13c91fee47808938f5e39 SHA-1: 4fb8c77333d5d67ac80fd3d2df3d86ee174d1a59 SHA-256: 592599733f467b79e27de79b05cc8b358eb27783d72802fa67fc024d9e1fe07b
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create SEO link farms or to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.ru/wb?keyword=tv%20guide%20nuevo%20laredo', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to 'Tv guide nuevo laredo' and the same malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=tv%20guide%20nuevo%20laredo In PDF document text
    • http://files.thesoundactivist.com/uploads/1/3/2/3/132303374/fugosegurotaxuwab.pdfIn PDF document text
    • http://sumodu.britneekent.com/uploads/1/3/1/1/131164538/vubafisu.pdfIn PDF document text
    • http://files.ithinkpet.com/uploads/1/3/1/4/131483214/sumexilav.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/1/0431/3333/7768/files/40026314921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1032/5671/files/13707045865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/pekelarexofedexoguroduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/89377120435.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1df9ea_f7ac3e5a3c214f279bf3034146743ad3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3f80ec_328c464fe4f440e99596143887e69fa8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f7fbc8_2ea7c739eec84c93b0e6878e4746817d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f0e51d_faaef37f42f144999b4b5fc9e5dab198.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/740d8c_3f52543bde76487bafb787c45ffa19d7.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_off00007f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F72 4824 bytes
SHA-256: 59bd971f628aeb4a60398300d9e2d547c31821e15390c8d80e18dde154a3688f
font_01_sfnt_off00008ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF3 12912 bytes
SHA-256: 27eb6486cfa8cdecf5ddbddc3d6212c975f11ccf6197e68e22a676afe85cd7cd

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