Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f8ae5ae3328f11b…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 01:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a22080dc91546730481535a9baea74a SHA-1: c876af46b74aeef4bbde08a0372f933a537d94ed SHA-256: 9f8ae5ae3328f11ba67d1a8e3735df9b9b902c710e016265419e045cb5bff998
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a direct link to a known malicious redirector, ttraff.cc, which is used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to a 'cell counter manual' and the redirector URL includes a keyword related to this, indicating a lure. No scripts were extracted from this sample.

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.cc/pify?keyword=vicell+cell+counter+manual In PDF document text
    • http://rinex.thisgirlstees.com/uploads/1/3/1/4/131438188/bbece063619d.pdfIn PDF document text
    • http://sekexo.smokymountaintax.com/uploads/1/3/0/7/130739561/1f83a4511.pdfIn PDF document text
    • http://xakil.samanthaeveyoga.com/uploads/1/3/0/8/130814328/ba3ce07eab1b.pdfIn PDF document text
    • http://boruzana.engineeringk12mass.org/uploads/1/3/0/7/130776031/96ec29.pdfIn PDF document text
    • http://files.domaplasma.com/uploads/1/3/1/1/131164534/gifuwubumip.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/1/0439/8222/5566/files/agricola_family_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3256/7195/files/zujefijaverutubebuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/proyecto_arquitectonico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6013/3031/files/black_s_law_dictionary_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9202/5249/files/vuzibibepere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7885/2503/files/area_of_trapezoid_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9998/5822/files/48331618054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/rabilovunesupigugosubagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6404/2396/files/sekedomiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/jisemipovujuxofajetuliduj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/98482289751.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_off0000653b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 4732 bytes
SHA-256: 37912c7212d62a0ffb4395f81ee22f53ec1c11103063b657b0451245de5a4f32
font_01_sfnt_off0000752e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 10180 bytes
SHA-256: 2563d6af0ed90c6638b7e245d87d81bd45870a9e21ea7ef4671b00e394e00156

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