Malicious PDF — malware analysis report

Static analysis result for SHA-256 945930a9d866f62f…

MALICIOUS

PDF

51.0 KB Created: 2020-08-08 06:28:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89319e92d646ca2c7a78fff9c4353233 SHA-1: e3a293e07393cf6258e16670c0877a6da2dd58cb SHA-256: 945930a9d866f62f69c5d5fa05381840b4b899442296ba911bf65bd5b38bd136
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=amino%25C3%25A1cidos+essenciais+e+suas+fun%25C3%25A7%25C3%25B5es+pdf'. The document body, though partially garbled, suggests a lure related to 'essential amino acids', likely to mask the malicious intent. The presence of multiple Shopify-hosted PDF links further indicates a link farm strategy.

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=amino%25C3%25A1cidos+essenciais+e+suas+fun%25C3%25A7%25C3%25B5es+pdf In PDF document text
    • http://files.alabamamobilehomebrokers.com/uploads/1/3/1/6/131636719/07f3d009838.pdfIn PDF document text
    • http://pelogeg.craftopoliscraftclub.com/uploads/1/3/0/7/130776760/jolipe.pdfIn PDF document text
    • http://files.sasklilysociety.org/uploads/1/3/1/1/131164159/4214593.pdfIn PDF document text
    • http://files.abundantgracesparta.org/uploads/1/3/0/7/130739742/purer.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/1/0435/2439/1067/files/37194524715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/waneberonimisatatika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30552771564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/88131128974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/zupexotavidowudasanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5638/1597/files/79305498647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/delete_changes_git.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/96946204380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/vowozetagirotug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/14879198722.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 6

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_off0000863d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x863D 5796 bytes
SHA-256: 3cf958ac8e6bff6457952aff1d29e238b13b2ad0f129a696d8462a22d692c136
font_01_sfnt_off000098d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D2 11972 bytes
SHA-256: f82ee490ac079115c154be90a93f42b7edb67620a5f4f8d6d494dfd1f7c6ed62

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