Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a732f5caef2fbc…

MALICIOUS

PDF

46.5 KB Created: 2020-07-23 17:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7316aa4f10abc723cfaf1a43cf3ca165 SHA-1: 20077e8ef73a670dce6505b6afb9cea617de9a02 SHA-256: c8a732f5caef2fbc83334c7969a7b9fa362408ac7042e75c1470f0ece2d280a4
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a malicious redirector link disguised as an exam form, indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'SE_DOWNLOAD_BUTTON' heuristics. The primary malicious IOC is the ttraff.ru URL, which likely leads to further compromise. The document body is heavily obfuscated, but the presence of the exam form lure and the malicious link strongly suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=afcat+exam+form+2020 In PDF document text
    • http://files.innervoiceintuitive.com/uploads/1/3/0/9/130969054/pagovewusep.pdfIn PDF document text
    • http://files.xcivcouture.shop/uploads/1/3/2/6/132695697/7067138.pdfIn PDF document text
    • http://files.mymanelegacy.com/uploads/1/3/1/4/131413718/numoji.pdfIn PDF document text
    • http://files.anneboring.com/uploads/1/3/0/7/130738564/9608893.pdfIn PDF document text
    • http://files.wrightthewriter.com/uploads/1/3/0/8/130873914/8682075.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/1/0431/8917/4432/files/5178827761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/bigovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/19703612726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/21366590468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6735/9900/files/nupizulinimofujuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/jolosagunap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0543/6326/files/13115124326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9418/0001/files/vunozepizivepof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/32886294855.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_off00007858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7858 4784 bytes
SHA-256: 20e6cf8d1c6c0c262b99eecb60169c9670a5a0bd154aa2f6e28ab270358506d2
font_01_sfnt_off0000888f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888F 10804 bytes
SHA-256: fb90766a45a5099f53ef19780a32ad267ceb4555d446a66fbfde40c0740d5474

Open this report in the interactive analyzer, or submit your own file for analysis.