Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a5b5fba2f78281…

MALICIOUS

PDF

42.6 KB Created: 2020-08-20 05:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6b662262253065b827c35c62a557846 SHA-1: 22245ec9f2bd89de40671e3e711ce6d3cc51a619 SHA-256: 93a5b5fba2f7828168dfe1a858125bb4f87af8b233ed39442a01f67dbefe8073
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=types+of+sentences+worksheet+3rd+grade`. This URL is presented within the document body, disguised as a worksheet title. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on `cdn.shopify.com`. The ML classifier strongly indicates maliciousness.

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=types+of+sentences+worksheet+3rd+grade In PDF document text
    • http://files.stevenmmillerphotography.com/uploads/1/3/1/8/131856257/2400257.pdfIn PDF document text
    • http://files.giuliapezzali.com/uploads/1/3/0/8/130814605/kipusakosagidole.pdfIn PDF document text
    • http://vefomotek.themoviepress.com/uploads/1/3/1/6/131607310/wudepolufuxufu.pdfIn PDF document text
    • http://files.drpetermessmore.com/uploads/1/3/1/4/131454696/442640036.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/16213952135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/83612890845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5120/3225/files/agronomy_and_its_scope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/5702924979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2802/8312/files/kodilasiketozugoboti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6521/2066/files/lupudeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/19637064730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/37934007031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1400/0538/files/numbers_1-_30_in_spanish_worksheet.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E6 5496 bytes
SHA-256: 92803dec01f3832b3adaead480eb0b051b2b9de3eccfe9b399f9bbd19ddd1eaa
font_01_sfnt_off00006ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA6 10388 bytes
SHA-256: baf66ff67fdbe8f48687567d916aa58a833e2a95e96fa4909f03a1c88166e81b
font_02_sfnt_off00008f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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