Malicious PDF — malware analysis report

Static analysis result for SHA-256 26024f3ada9c6516…

MALICIOUS

PDF

73.2 KB Created: 2020-12-22 03:58:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8d9947de4156d3b730a975afdb89449 SHA-1: 13ecfe2fc0175bc86ad59099442e6b45e756c237 SHA-256: 26024f3ada9c65162ec680bb9f0d9b9f667442df8621806c7dbc3a65c627c9fa
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one critical heuristic identifying it as a malicious redirector pointing to 'https://cctraff.ru/123?utm_term=how+to+craft+a+piston+table+in+minecraft'. Another heuristic indicates a PDF link farm, suggesting SEO manipulation for malicious purposes. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/123?utm_term=how+to+craft+a+piston+table+in+minecraft
    • https://radisowe.weebly.com/uploads/1/3/4/3/134366404/ace671cffa4b.pdf
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/salozu.pdf
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/sonitofubo-pufadusato-dobebatu-zixadutota.pdf
    • https://zadujemerumid.weebly.com/uploads/1/3/2/6/132695269/669b8233b58e5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e4c19de7-b8b4-4fb6-b142-0abcd3202b93/engineering_economy_6th_edition.pdf
    • https://uploads.strikinglycdn.com/files/204d7820-f870-4fb0-a69a-437d6ff8bc61/zezog.pdf
    • https://uploads.strikinglycdn.com/files/feb73b6a-be67-43ef-b7a5-95d0410cf383/minecraft_how_to_fly.pdf
    • https://uploads.strikinglycdn.com/files/33a08a0e-6235-44b9-9a48-341586a4ae52/bosch_exxcel_fridge_freezer_instructions.pdf
    • https://uploads.strikinglycdn.com/files/e0ce552d-278f-42e9-8f82-876a595dcc3b/48447294400.pdf
    • https://uploads.strikinglycdn.com/files/669b11ad-51b9-4955-bac7-cfc9521e7584/introduction_to_catholicism_didache_series.pdf
    • https://uploads.strikinglycdn.com/files/a7faee24-c32a-456c-8ce8-eb853bb1b181/6481998149.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e134.bin
bb738002f1d34412563d79cf79c92c759fc496b3b2cdf622fc98b35857b456d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 5356 bytes
font_01_sfnt_off0000f363.bin
9348baaeec007a5003169868611abe83c9a0b09174120f35b9301dc6ed0c54b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF363 10764 bytes

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