Malicious PDF — malware analysis report

Static analysis result for SHA-256 65082aa3e6dbdf67…

MALICIOUS

PDF

32.9 KB Created: 2020-08-08 17:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60413b767c245e3f915bc3493646bd79 SHA-1: 43ed689cbc433564d494d92f207b77aa7cf1acd2 SHA-256: 65082aa3e6dbdf6742eed350739f3b8559dcf1f323f8bc6ba061bbbe87d59464
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though obfuscated, contains a URL that is also present in the heuristics as a malicious redirector. This suggests the document is designed to trick users into visiting 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.ru/wb?keyword=mitosis%20and%20meiosis%20matching%20worksheet In PDF document text
    • http://files.flashforge.com.hk/uploads/1/3/1/0/131069789/5893958.pdfIn PDF document text
    • http://files.backcountryhunters.ca/uploads/1/3/0/7/130740189/befus_sufosojat_femuwipubalata_vemiredefen.pdfIn PDF document text
    • http://zimat.sisterhoodtravels.com/uploads/1/3/1/8/131856917/5932530.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/1/0434/7622/2114/files/52399878722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7485/4820/files/nokuluridab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/xanozumopobevabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/95283438805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/wimitedipatiwije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/badorew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/lipotopufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8579/0358/files/gowefepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5743/8101/files/26115631273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/5638982644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/lilitujijonuj.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 3

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_off0000435a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x435A 5484 bytes
SHA-256: 60df8720e901ca3a6fd83a01b159a991458b96510302951ba175f56a0c9bfe90
font_01_sfnt_off000055f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55F1 9216 bytes
SHA-256: f9d1cecc772ee53f21301388f97afd9d9f4f06ec0aa5cbb3f0f746d7ec9c8007

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