Malicious PDF — malware analysis report

Static analysis result for SHA-256 05074ce69398b2e2…

MALICIOUS

PDF

72.2 KB Created: 2021-02-19 09:57:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 470255312db80cf3ea7547812d162177 SHA-1: 2717a911bd14b3678cc4a1f725ae6d47ff746f12 SHA-256: 05074ce69398b2e2addf2814d0a3e1e6d928a13c9a02c47914bdc4ec74d816e7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'relative motion problems worksheet with answers pdf', likely to trick users into clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=relative+motion+problems+worksheet+with+answers+pdf
    • https://koloputumoti.weebly.com/uploads/1/3/4/8/134887370/livodetaku-fuxut.pdf
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/1239bdb1dd151d8.pdf
    • https://cdn.sqhk.co/kululojilo/jhbjjo4/weekender_bag_vera_bradley.pdf
    • https://cdn-cms.f-static.net/uploads/4488329/normal_6027986fdf557.pdf
    • https://cdn.sqhk.co/vufuvevu/dgdgirV/fire_wallpaper_and_keyboard_lone_wolf_download.pdf
    • https://cdn.sqhk.co/tanemurad/hi7R87N/car_racing_results_today.pdf
    • https://puruvafapazono.weebly.com/uploads/1/3/0/8/130815059/zedijegunujefifa.pdf
    • https://jexabuwojese.weebly.com/uploads/1/3/1/3/131384148/toxekafeji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kavexuvosa.epizy.com/buvowup.pdf
    • http://verirajoxa.epizy.com/vector_ornament_coreldraw_format.pdf
    • http://pitupeg.epizy.com/18326191608.pdf
    • http://wojixefem.epizy.com/batman_arkham_origins_android_hack_apk.pdf
    • http://jifigazanovew.epizy.com/beatles_mono_albums.pdf
    • http://texatutegelemov.rf.gd/5404835418.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_off0000dcb7.bin
7e2054f2ebb6784fa73685c13362a2b720ad4c6dc4a333bf718a41d4b4006f3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB7 5644 bytes
font_01_sfnt_off0000efcc.bin
f78db515a547a6c6a0031427fcd89a47e0448c3bf4a7b77881030a74fd0fcaf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCC 10400 bytes

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