Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd98733836856a99…

MALICIOUS

PDF

53.6 KB Created: 2020-08-11 08:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8c5d5e570de1b0bf4b3e1923c6ac048 SHA-1: 79230bc639d2c5d969576c519e88fa5e678b9a03 SHA-256: fd98733836856a9940614108b3e4872450c95da5862a066a02d01bbf678d30f6
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=acute+tubular+necrosis+pathophysiology+pdf', which is also flagged as malicious. The presence of a link farm suggests an attempt to manipulate search results or deliver malicious content through a series of redirects.

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=acute+tubular+necrosis+pathophysiology+pdf In PDF document text
    • http://gifapif.meatslut.com/uploads/1/3/2/6/132696323/c35d06152becfd.pdfIn PDF document text
    • http://files.azrielbermant.com/uploads/1/3/1/3/131383269/tuvexerunafi-soxafodepemomu.pdfIn PDF document text
    • http://litizos.iptuk.net/uploads/1/3/1/4/131408899/fejirefuxenewedukeb.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/1/0434/2163/0631/files/ribipuzijixaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/black_magic_speed_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/46913937637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/8019557692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/87897826843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0660/5987/files/74061187281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/14371134794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/20910677487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6416/3490/files/84522385691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/56123434675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8788/6488/files/59000807466.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_off0000922c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x922C 5648 bytes
SHA-256: 8c35202653295be1a830430fb6154f7bcfd89eece74f689e428463a90b45164c
font_01_sfnt_off0000a55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA55B 10640 bytes
SHA-256: 36f4530d619f5fbeb289b279bbdbab5233771577e1aea34a573818f13b27c34e

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