Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd1b47fcc845e06…

MALICIOUS

PDF

66.6 KB Created: 2021-01-13 13:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34ca3df1a322941a8e4e1af6c00c5cf9 SHA-1: 7f9eea04a74b7209c27f8e1b07477f9819738b7e SHA-256: 1fd1b47fcc845e062513c3deeb0ada42dafbc09f2209daaa5adc6cd1cdd62045
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, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'traffking.ru', which is highly suspicious. The document body, though heavily obfuscated, suggests a lure related to 'Mp4 video song', aligning with common phishing tactics to entice users to click malicious links.

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://traffking.ru/aws?utm_term=mp4+video+song
    • https://site-1177042.mozfiles.com/files/1177042/mini_golf_100_level_61.pdf
    • https://site-1177315.mozfiles.com/files/1177315/xefadirapaxazofuj.pdf
    • https://site-1174847.mozfiles.com/files/1174847/24712411361.pdf
    • https://site-1176201.mozfiles.com/files/1176201/frases_tumblr_en_ingles_con_su_significado.pdf
    • https://cdn.sqhk.co/wajidafix/QgcRD77/rules_uno_blank_wild_card_ideas.pdf
    • https://cdn.sqhk.co/pewovixosafu/gIgcDhd/battle_nips_game_solution.pdf
    • https://cdn.sqhk.co/sejixikerut/ggVUjgi/mulan_disney_plus_with_premier_access.pdf
    • https://cdn.sqhk.co/durotula/fjd4mB8/67198313784.pdf
    • https://site-1168384.mozfiles.com/files/1168384/maze_3d_print.pdf
    • https://cdn.sqhk.co/wifavizen/AEhgDhe/n95_face_masks_for_sale_on_ebay.pdf
    • https://site-1204352.mozfiles.com/files/1204352/ximosej.pdf
    • https://site-1166621.mozfiles.com/files/1166621/ice_cream_sandwich_comics_youtube.pdf
    • https://site-1173778.mozfiles.com/files/1173778/podufatufixisadogumatake.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/buganabowumujef/29331773431.pdf
    • https://s3.amazonaws.com/faduxodiwo/bomberman_clasico_apk_para_android.pdf
    • https://s3.amazonaws.com/feliso/ashampoo_burning_studio_2013_completo_crackeado.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_off0000c850.bin
7aa969e876c9b700016847c52f2a712d7bef7fdf845e65ed87e77ba517e19548		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC850 4944 bytes
font_01_sfnt_off0000d954.bin
c2fcc345033ceb004d775c826b1932715c07255dcf8ea82099084d7c2b993b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD954 10732 bytes

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