Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ea2197db43bc6f…

MALICIOUS

PDF

34.7 KB Created: 2020-08-15 13:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df40df1060029286bdfd24c33c749bab SHA-1: 6e2b3505e89581b046e3c575a174b69954eced84 SHA-256: f3ea2197db43bc6f644383f45c199a1a9b3b69934b53780a564aa9297b865747
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this is a PDF link farm designed to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the malicious redirection links.

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/wb?keyword=grammar%20games%20mario%20rinvolucri%20pdf In PDF document text
    • http://sejus.castlebrooketlc.ca/uploads/1/3/2/7/132740214/warofusazulev.pdfIn PDF document text
    • http://files.beachcitiesrockclub.com/uploads/1/3/1/6/131606789/sogefubinudavud-numafukoradidot-kubepigifagobu-dovopevudobex.pdfIn PDF document text
    • http://files.casadefamiliaguate.com/uploads/1/3/1/4/131452878/bimavunufekepe.pdfIn PDF document text
    • http://files.academicbatgirl.com/uploads/1/3/1/4/131409526/69fff836e1b9e.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/1/0427/6623/7852/files/8160016523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9605/files/ravenloft_player_s_handbook_3._5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/1672116037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/livowerofunibamigurixix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4069/3662/files/synapse_download_roblox_exploit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/family_tree_template_to_complete_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9006/3003/files/adobe_reader_portable_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/xoxinavesarelaxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3957/7496/files/sebepanerugegu.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 3

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_off00004a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A8A 5564 bytes
SHA-256: 3aca4c4e2300dc016ad85dea1b11bff44d02819c17f8e92b9cd3332cd8df821f
font_01_sfnt_off00005d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6C 9608 bytes
SHA-256: 042db1a1fefc6e24789ec2fdf4546cde6dd02806cc71daceae26190cd5f2b6e8

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