Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e59c4afc0360fd4…

MALICIOUS

PDF

75.7 KB Created: 2021-04-06 16:36:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1559249bd5cbb4b4f0e13fa16d83ec56 SHA-1: cbaeb7fef609b30c67b7cb5b9d06260ea2e122a8 SHA-256: 3e59c4afc0360fd4845570e4d93e8550f1d5266b1c2c25a5dd22d5071d17f614
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'https://nipisod.ru/wix?keyword=feed+me+50+dominos', which is likely part of a phishing lure. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'dominos'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://nipisod.ru/wix?keyword=feed+me+50+dominos
    • https://cdn-cms.f-static.net/uploads/4490252/normal_5fd76c0bc96ba.pdf
    • http://zuxuvikewi.sportsontheweb.net/28740310555.pdf
    • https://static.s123-cdn-static.com/uploads/4393893/normal_5ff883a5dee40.pdf
    • https://cdn-cms.f-static.net/uploads/4465252/normal_604423bd3f328.pdf
    • http://prizinsta365.website/krunker_io_cheatsipsu3.pdf
    • http://bexowobiminefi.mywebcommunity.org/adverb_clauses_of_time_exercises.pdf
    • http://xplaintome.ru/68377787731pal10.pdf
    • https://cdn-cms.f-static.net/uploads/4471723/normal_6028c3503ac2a.pdf
    • https://static.s123-cdn-static.com/uploads/4391001/normal_600503e62fa75.pdf
    • http://mebets.xyz/didokevenuwepetasabimuridmhy6a.pdf
    • https://cdn-cms.f-static.net/uploads/4446774/normal_6060ffa9f4188.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wegugus/lagerexizalogoju.pdf
    • http://polilofu.onlinewebshop.net/51839351074.pdf
    • https://uploads.strikinglycdn.com/files/e187fcbe-58b5-4d22-909f-ec32a1c52d9c/47604061178.pdf
    • https://s3.amazonaws.com/mubefula/xipapubaluwodukanede.pdf
    • https://s3.amazonaws.com/jivagajamav/dogolixobov.pdf
    • https://s3.amazonaws.com/xamibebulosaxug/bhagwan_film_video_song.pdf
    • https://s3.amazonaws.com/devuxuzejozam/37986769999.pdf
    • https://uploads.strikinglycdn.com/files/d16f1ccb-81a9-44c7-94a6-b7592bd3617f/toto_toilet_handle_replacement_9592.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_off0000ebb2.bin
49c2d74a17297d5e47268538b8ddfb452641692727a6942feedda908cacc9769
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB2 4852 bytes
font_01_sfnt_off0000fc2e.bin
d5afaeae136b1e0ff8d43f72370a7d000b90678d24a847036ffa0e079180dfac
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2E 11264 bytes