Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d2078d9fb69c80…

MALICIOUS

PDF

43.2 KB Created: 2020-08-15 05:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aca2fce52aaaee257e5ed53d0a7d3506 SHA-1: e8e73bab43dbadd20ed8ed86115fe266795fc096 SHA-256: a2d2078d9fb69c80cd7f56f5cc940a39810b408646c6644555979b040b629670
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, directing users to a URL associated with malicious activity. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links. The document body, though partially corrupted, contains text related to an 'Ameristar heat pump installation manual' and includes the malicious URL, suggesting a lure to disguise the malicious intent. The primary malicious URL identified is https://ttraff.ru/pify?keyword=ameristar+heat+pump+installation+manual.

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/pify?keyword=ameristar+heat+pump+installation+manual In PDF document text
    • http://wefop.pushpamalextalaiver.com/uploads/1/3/1/3/131398097/da50a3a70c6c1a.pdfIn PDF document text
    • http://files.buttroselandscape.com/uploads/1/3/1/1/131164308/pitozupujapeda.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/1/0430/7173/3917/files/pigoves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9898/8949/files/94792343472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9090/3193/files/pukewovivatepubagojexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/vemawoxiligapabiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9333/9803/files/buffalo_wild_wings_menu_with_prices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/assizes_of_jerusalem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/bavevipurimojug.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_off00006b5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5D 5048 bytes
SHA-256: f5bdbf0e57e67ec8566ef4d8e420b333a53e4e8857e2375e7f5adeeaec1dc036
font_01_sfnt_off00007c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5E 10624 bytes
SHA-256: 400f5f94385044d157dfa7d54f23e381e10d3cf3799505b8784cf5fc518c5aa9

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