Malicious PDF — malware analysis report

Static analysis result for SHA-256 45aca1989ccc88f9…

MALICIOUS

PDF

49.9 KB Created: 2020-07-25 10:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 748441d21ae8f7b191a5ac6f70eeaeef SHA-1: b153b02c17586b968852f6fa912000218d776c2e SHA-256: 45aca1989ccc88f9c0d796505e853ddf8e6889321640da536f740b8bc0c8247b
294 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link: User Execution T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a mass of external links, including one pointing to a known malicious redirector. It also employs social engineering tactics, prompting the user to install a browser update or extension, and directly requests sensitive recovery secrets or private keys. The embedded URL `https://ttraff.ru/pify?keyword=chrome+package+for+linux` suggests a lure related to browser packages, aligning with the 'SE_BROWSER_INSTALL_LURE' heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=chrome+package+for+linux In PDF document text
    • http://files.drlesliejenkins.com/uploads/1/3/1/3/131379054/jokuvoduguduxijepeg.pdfIn PDF document text
    • http://files.fvapbotb.com/uploads/1/3/2/6/132683135/6d4cba85.pdfIn PDF document text
    • http://files.rivascap.com/uploads/1/3/1/6/131607229/999db09fab.pdfIn PDF document text
    • http://files.diedhardlaughing.com/uploads/1/3/1/1/131164095/a92048b60dded68.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/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2155/0247/files/27599686164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/27140268444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/36581880583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/86138295517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fasexerogetotano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/gililejabulusiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/22374138971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/rijuxasikakabetexeleluki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/padudikitutumemovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/5369582579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4619/7653/files/65569251895.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_off00007d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D45 5208 bytes
SHA-256: f3d002b2afc0bda932d9022724dd6442c193566db87cea32d78abecbe1d0d15c
font_01_sfnt_off00008ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED9 13744 bytes
SHA-256: fdb27f91e783a5a7eab02cabbaec13544489be0314f60ba8a3e649f5c41e7a50

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