Malicious PDF — malware analysis report

Static analysis result for SHA-256 c099fa01db6fe02f…

MALICIOUS

PDF

76.0 KB Created: 2021-03-15 22:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e6eee91f4ed345caa85a2ce87c01d05 SHA-1: d6528526ae9737566100cdfd1ca22354505a6cfd SHA-256: c099fa01db6fe02f8d20172462d4a864c2e784c2ec939a84b80ab2cbbc74fa59
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains a URL that appears to be a lure related to administrative leave. This URL is likely intended to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=how+long+can+you+be+put+on+administrative+leave
    • https://cdn-cms.f-static.net/uploads/4412895/normal_603a61cc35163.pdf
    • https://cdn.sqhk.co/titukopano/ayGgiji/neon_night_city_launcher_theme_mean.pdf
    • https://cdn.sqhk.co/bulunazi/ih9u3qr/dalegogipazupibemoxef.pdf
    • https://cdn.sqhk.co/vuvapolaxaj/hfBidEJ/ski_safari_adventure_time_online.pdf
    • https://cdn-cms.f-static.net/uploads/4493209/normal_600bbcf25b54e.pdf
    • https://static.s123-cdn-static.com/uploads/4421468/normal_60062d752fb89.pdf
    • https://cdn.sqhk.co/kawonidoza/ii2Fji0/13301542153.pdf
    • https://cdn.sqhk.co/xeduwukaxusa/ehfhcid/stickman_parkour_game_apk.pdf
    • https://cdn.sqhk.co/vulovosovem/jbbK6JS/godanabogilasexogele.pdf
    • http://sdfsdfsdf.shaketorch.com/english_to_french_words.pdf
    • https://cdn-cms.f-static.net/uploads/4383688/normal_60152975dfd01.pdf
    • https://cdn-cms.f-static.net/uploads/4489241/normal_602f43c37acce.pdf
    • https://cdn.sqhk.co/gulijolane/hakgjiP/alone_movie_2020_ending_explained.pdf
    • https://cdn.sqhk.co/baruduwege/jcjgegd/blundstone_boots_womens_size_9.pdf
    • https://cdn.sqhk.co/nejisakatok/heuHjeP/sijejujajowurode.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://woduzubede.epizy.com/types_of_accidents_in_the_workplace.pdf
    • https://s3.amazonaws.com/zerejibixupav/bitrise_android_workflow.pdf
    • https://s3.amazonaws.com/wopari/rufojokavugew.pdf
    • http://kivakup.rf.gd/60443890841.pdf
    • https://s3.amazonaws.com/bejenosugede/73666815047.pdf
    • http://gesosogo.rf.gd/gebuxupo.pdf
    • https://s3.amazonaws.com/jupoti/various_layout_templates_available_in_powerpoint_presentation.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_off0000ec0d.bin
65898fc49596b34c4355dfed1e340dfb559b082d8b4e98fd9baf3026cd2d79dc
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0D 5748 bytes
font_01_sfnt_off0000ffa4.bin
4fa6bb18b95cf6257b12296ce4b77815ffe8db43820e0c706882e237aefbcf97
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA4 10152 bytes