Malicious PDF — malware analysis report

Static analysis result for SHA-256 622373be8af6dd02…

MALICIOUS

PDF

63.1 KB Created: 2020-12-25 00:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f83dbdd3c1b875fe3235607c3167f991 SHA-1: d449cd0be7e6f76869c7de312b2bfd9ba09e4280 SHA-256: 622373be8af6dd024c3967480bde8c310ed123a969c3da5fbc02b623a3edfbea
154 Risk Score

Malware Insights

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

The file is a PDF containing a malicious redirector link to 'https://cctraff.ru/123?utm_term=aidan+martin+i+blame+you+lyrics'. This is strongly indicative of a phishing or malware distribution attempt, leveraging the PDF as an attachment in a spearphishing campaign. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=aidan+martin+i+blame+you+lyrics
    • https://cdn.sqhk.co/kosuxatune/ogdKgej/dodgers_last_game_in_brooklyn.pdf
    • https://cdn.sqhk.co/lupejatuwi/aijAThe/world_most_wanted_drug_lord_2020.pdf
    • https://static.s123-cdn-static.com/uploads/4366987/normal_5fe4d537d8ac5.pdf
    • https://cdn.sqhk.co/bikezuku/igigijc/lugorozajuworu.pdf
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5fd66ca47d45b.pdf
    • https://cdn.sqhk.co/lupejatuwi/eHiajij/btd6_apk_original.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3c603981-3f8c-4450-a661-e1d34e95cbd8/dizirafazapafape.pdf
    • https://s3.amazonaws.com/kalufizefem/guitar_hero_ps2_list.pdf
    • https://s3.amazonaws.com/kibavutibeved/fefapofuv.pdf
    • https://uploads.strikinglycdn.com/files/c289a704-895f-4669-b0db-c0439c41fd54/zuwabeso.pdf
    • https://uploads.strikinglycdn.com/files/0c4e1ee1-90d7-46ad-b3df-7a9572334a9a/timidudatezifig.pdf
    • https://s3.amazonaws.com/vebogotexaf/tamil_bass_boosted_songs_free.pdf
    • https://s3.amazonaws.com/regufojalojaza/38722705753.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_off0000bdf9.bin
7f4a75b62e0c4a51bd26d3e597115f978dce9fbb43683bd6014e583f3bd565f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF9 5316 bytes
font_01_sfnt_off0000cff5.bin
48f1a8657b5ff65ec49a153967330d562153486a1a8249e2556198312d83555c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF5 9252 bytes

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