Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2516f8babdc393…

MALICIOUS

PDF

70.5 KB Created: 2020-12-02 18:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c77cdc3d0312999e3f028454d893b3d SHA-1: d3fe4ae9e47672ac2578fee8594409ffbddaad83 SHA-256: bd2516f8babdc39334d8911756fcea616260d31c70c2cbc277fa8a5d883ec705
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a ML classifier and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, including one to 'trafficel.ru', suggesting an attempt to redirect users to a malicious site. The document body, though heavily obfuscated, appears to contain search-related text, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?utm_term=female+mandalorian+names
    • https://tivurenufetoza.weebly.com/uploads/1/3/4/2/134235987/5d81927.pdf
    • https://gojanevalu.weebly.com/uploads/1/3/4/3/134353606/157a60.pdf
    • https://duzetokip.weebly.com/uploads/1/3/4/4/134404829/jaxekufo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tixedujegibex/powuraxovorigenineki.pdf
    • https://uploads.strikinglycdn.com/files/0dd6e7c7-52d8-47a5-a8e0-6314787f6d17/82062784842.pdf
    • https://s3.amazonaws.com/rabewiruzitewa/kewadelawosulogomiwexuga.pdf
    • https://s3.amazonaws.com/lebaxa/52962702878.pdf
    • https://s3.amazonaws.com/dudurat/sarah_jakes_roberts_book_about_teen_pregnancy.pdf
    • https://uploads.strikinglycdn.com/files/e169e41b-dd63-401e-8853-02f72710a9b6/92781252841.pdf
    • https://uploads.strikinglycdn.com/files/846f4365-7264-4c97-8020-3726aa2347fb/fejiwodenixesiwezasugodap.pdf
    • https://uploads.strikinglycdn.com/files/fe05c440-a977-473b-947f-5b72ddc94c11/transformers_list_of_autobots_and_de.pdf
    • https://s3.amazonaws.com/kasuwevovog/64249919132.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_off0000d827.bin
707f07ac79bf20bb1b438f96ac057155dc55f858b0e9d25e41dcc06bb578c36e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD827 4928 bytes
font_01_sfnt_off0000e8c9.bin
d6e3c8fa37374a340f18a8915cab08f4541214c5c28f0d9087d487dce2bd0af4
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C9 10696 bytes