Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3aa3c26ba4fbf37…

MALICIOUS

PDF

37.9 KB Created: 2020-08-16 21:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 725dcd6891f657a6ad98bcb55ecb92d2 SHA-1: aa8dcde4ba97e3269eaab4d0c4bebaec51f3c633 SHA-256: e3aa3c26ba4fbf376366dee854847e54ff480693ad730ec6e4da6d9a4ccd9672
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, indicating a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=crusades+worksheet+and+map+activity. While no scripts were extracted, the heuristic firings strongly suggest the document's purpose is to lure users to malicious sites.

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=crusades+worksheet+and+map+activity In PDF document text
    • http://files.auscamfreedomproject.org/uploads/1/3/0/7/130775808/749c4221.pdfIn PDF document text
    • http://pevujox.yukonchocolate.ca/uploads/1/3/2/7/132740249/sonazosuj_boriged_ganekeb.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/1/0431/9775/9643/files/penemobidur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/vukusamevuboga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/max_steel_vodlocker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/7587/3442/files/texas_accessibility_standards_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/52154754040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6716/3302/files/64488030930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/likenito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6392/6174/files/bifijejufap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/45906659153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7432/1560/files/16599681387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/bread_machine_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36149341097.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 4

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_off0000546e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546E 5504 bytes
SHA-256: 4f2b311d4ee4cf92334de4c91fe5478b9af6f45d23d67a6f8e337ba9b621abfa
font_01_sfnt_off00006715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6715 10576 bytes
SHA-256: 94bd6152acaefa51028a6d0926a06f5115a6ac42ac750fd9e759d4111940505a

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