Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7983f1ae86b2cd…

MALICIOUS

PDF

84.1 KB Created: 2021-02-13 11:09:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78439214facd15510c7dc51890d4d1b6 SHA-1: a9849d14ef6e6e1dfd26e65307fb801021f5252c SHA-256: cf7983f1ae86b2cda3c0cf4f86b8637ffb7c5dd7819480ed5a65cc3048cf52c8
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' suggests the document is designed to trick users with promises of prizes or funds, a common tactic in advance-fee fraud. The presence of embedded URLs, such as 'https://bologen.ru/wix?keyword=grand+summoners+mod+apk+2.40.1', points to the document's role in directing users to download potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=grand+summoners+mod+apk+2.40.1
    • https://static.s123-cdn-static.com/uploads/4421049/normal_600103b87119f.pdf
    • http://visionnew.xyz/77839498278h237k.pdf
    • https://cdn.sqhk.co/manewujunug/jjijjjb/lock_screen_wallpapers_iphone_8.pdf
    • https://cdn.sqhk.co/foropogajag/gdlQwgf/color_balloons_dream_meaning.pdf
    • https://cdn.sqhk.co/wugolekufo/djhvipo/kududegugoxaji.pdf
    • https://cdn.sqhk.co/zidezofa/qWbgjjh/baxifivela.pdf
    • http://vovality.club/gegupetumaxogoluxatita6ov3c.pdf
    • https://static.s123-cdn-static.com/uploads/4409256/normal_6006827a01b67.pdf
    • https://cdn.sqhk.co/wufevinek/je5Dihl/mafolerifazerag.pdf
    • https://cdn.sqhk.co/leperanurosi/Dhigdhf/gerokomanizazivululegubo.pdf
    • http://site-shop.xyz/greatest_hits_of_the_70s_rock_and_rollokqax.pdf
    • https://cdn-cms.f-static.net/uploads/4422890/normal_601ee65949150.pdf
    • https://cdn.sqhk.co/xororofomed/NjgdgeO/92236565936.pdf
    • https://cdn.sqhk.co/jivazufevi/0U3gdha/pictures_of_time_flower.pdf
    • http://goodsun.fun/human_body_systems_worksheets_7th_gradeqn3n6.pdf
    • https://cdn.sqhk.co/terasovo/ogehgjc/love_and_respect_book_free.pdf
    • https://cdn.sqhk.co/papazokixe/yjcjgig/punuwuro.pdf
    • http://lalashoppen.online/google_chromebook_pixel_2013_android_apps04l91.pdf
    • http://helper-badges.com/pk_trke_dublaj_torrentle_indir19mm4.pdf
    • https://cdn.sqhk.co/wixexozesila/SjgMif4/20484544913.pdf
    • http://lenudes.com/ligaloluxujojazomowemamavhpyo.pdf
    • http://richteam.site/division_with_pictures_worksheetzofcj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • 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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f394.bin
cec185da56fd9611812d87b58a9ceaa57343881305bd823525df23b241958b3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF394 5616 bytes
font_01_sfnt_off000106a6.bin
521a1e99e65ea8ccb8157b6d1cde013d08362828fd798a19b7c92ecd5b0f23f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106A6 8048 bytes
font_02_sfnt_off00011cfd.bin
d70b3babd11f587ab22427b1546f5159aeb9774e70d514fb39cb907c1a217061		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFD 11108 bytes

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