Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5f5791215a7370…

MALICIOUS

PDF

53.0 KB Created: 2020-08-21 01:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edfac25cf34b78f91d79f12ec34995d1 SHA-1: d8e34728fb271b16fee002034bb720bc66c4fd46 SHA-256: fe5f5791215a737070d2df8603399873476bb98aed1a437c26768a25a100cb1a
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body and embedded links suggest a link farm strategy, with the primary malicious URL being https://ttraff.ru/pify?keyword=boy+scout+uniform+patch+placement+2019. This pattern is commonly used to distribute malware or conduct phishing campaigns.

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=boy+scout+uniform+patch+placement+2019 In PDF document text
    • http://wemurud.mts-wines.com/uploads/1/3/2/3/132302868/mifunofusawexarafi.pdfIn PDF document text
    • http://files.lotusranch-homes.com/uploads/1/3/1/4/131407263/5117865.pdfIn PDF document text
    • http://xulup.1corinthiens15.com/uploads/1/3/0/8/130874113/lokuzanosafajovowok.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/1/0432/0506/6907/files/bise_lahore_matric_result_2020_gazette.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4066/9602/files/conejos_river_anglers_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/94923071693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3077/files/29362989535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7770/1533/files/97487575684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/32280216087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2041/8198/files/anatomy_bd_chaurasia_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/56939670073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3750/7240/files/18906720021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/58313401041.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_off00008e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E61 5888 bytes
SHA-256: 497107d79975ad5ab603c5a87e282d3dff774e9b8ed2ec54ae00066b4f1dcc96
font_01_sfnt_off0000a24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA24B 10852 bytes
SHA-256: f06ad14530e624ceb0d8bf307d8f852609596ffc803659492ec56ae2d4ec49a3

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