Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a1699aed902b47…

MALICIOUS

PDF

34.6 KB Created: 2020-08-11 02:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65746c4679db2467fd488b2ba7ec1313 SHA-1: c72ae24b23b9b6ece79fb346db6fd57ac48cc002 SHA-256: 50a1699aed902b479eb3cbad8804e0bf73ca3df634f0efbfe65980a5e1155ee5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the redirector. This suggests a phishing or scam attempt designed to redirect users to malicious content.

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.com/pify?keyword=frequency+adverbs+position+exercises+pdf In PDF document text
    • http://files.stantonvillagehall.com/uploads/1/3/1/3/131380995/wakapabibata.pdfIn PDF document text
    • http://files.mattersofthesoul.org/uploads/1/3/2/6/132682883/piwufavidadudajimir.pdfIn PDF document text
    • http://files.freereinequine.ca/uploads/1/3/1/0/131070051/6f4edd925d054ac.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/1/0447/8153/5389/files/possessivpronomen_latein.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4231/4152/files/makkar_ielts_speaking_download_2020_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/c_lambda_expressions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/dexejikugefoxufiganadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/16436936895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/bon_voyage_french_2_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/principles_of_genetic_counselling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6419/7273/files/9661735938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/barurodiradepor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/acknowledgement_letter_format.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
🗂 Part of campaign: freereinequine.ca 5 samples

Related samples 1

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_off00004877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4877 5568 bytes
SHA-256: afc3ae1772864756f4552a459f780d1c5bbb3e2b75300429763ae3854c48cd34
font_01_sfnt_off00005b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7D 9988 bytes
SHA-256: 3d27e20d3b3bb498d6f674f06afe99d68b8fd677806105699d54b234a1e572ea

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