Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f9645480e563dc…

MALICIOUS

PDF

47.9 KB Created: 2020-08-04 06:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c22825a9ec5993315a51637c391653f SHA-1: 66be6b4682500ce3a37b8f3d12d33e513e2f4d55 SHA-256: 98f9645480e563dc32859cfbb1ed7d27b29db51bc48c0208feb131a34d0d89b9
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=soal+olimpiade+guru+biologi+sma+pdf', suggesting a lure related to academic materials to entice clicks. 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=soal+olimpiade+guru+biologi+sma+pdf In PDF document text
    • http://files.schec.net/uploads/1/3/1/8/131871894/6851944.pdfIn PDF document text
    • http://files.thedadventurist.com/uploads/1/3/0/8/130814676/mezuxego.pdfIn PDF document text
    • http://files.theplanningplaceevents.com/uploads/1/3/1/6/131636984/mudira_zolotetowuta.pdfIn PDF document text
    • http://files.rhpulleydesign.com/uploads/1/3/2/8/132814030/6256749.pdfIn PDF document text
    • http://files.thegreedycouple.com/uploads/1/3/0/7/130738988/33975.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/1/0432/2331/8686/files/952332676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/24274566026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/23736684892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/koxasavedobibezab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/pubejegilani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2131/8818/files/gifiruwareku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/can_t_edit_hosts_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/43059886376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/paxasedivulijuvunirerola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/76808594398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/44500105055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaragevutaxesidep.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_off00007d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1F 5604 bytes
SHA-256: d6a9518fa20665d17785f5ab91b8567cbf6048bb4a37d776c3bbb212e8af47e2
font_01_sfnt_off00009009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9009 10128 bytes
SHA-256: 6f315914426a99fda49604345d5be7adc0b79a9f12bfd18448ee0b8f288226f2

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