Malicious PDF — malware analysis report

Static analysis result for SHA-256 8338a9ec9d15a127…

MALICIOUS

PDF

74.9 KB Created: 2021-03-24 03:56:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d1a91df67b8e049c4df46e1de8db7f5 SHA-1: aa93f05bf6a0dab8bc29770f1f5f1cc50672e861 SHA-256: 8338a9ec9d15a127d67c393c5f831ca1490620eb00d7886c07326dd380558ce9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, potentially leading to further exploitation.

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://golowaki.ru/wix?keyword=homedics+cool+mist+humidifier+parts
    • https://cdn-cms.f-static.net/uploads/4376374/normal_60530f77371a1.pdf
    • http://narovomesizi.medianewsonline.com/56781285562.pdf
    • https://cdn.sqhk.co/gifexajed/9pDibqO/self-_guided_whiskey_tours_of_scotland.pdf
    • http://boribonabone.mypressonline.com/carnival_dream_deck_plans.pdf
    • https://cdn.sqhk.co/nixivezez/jejjDhd/high_speed_police_chase_melbourne.pdf
    • https://cdn.sqhk.co/zezofajanaf/8ghRjcZ/90355524898.pdf
    • http://kazotapojiwi.mywebcommunity.org/bac_international_maroc_physique_chimie.pdf
    • http://vuwimoxit.mygamesonline.org/how_to_put_together_a_craftsman_shop_vac.pdf
    • http://wapividazofar.scienceontheweb.net/56538519310.pdf
    • https://cdn.sqhk.co/sururezog/wXxhjda/tininutemijux.pdf
    • https://cdn-cms.f-static.net/uploads/4377909/normal_60257bb8d9c77.pdf
    • https://cdn.sqhk.co/nebafaveju/jgjfa4Q/tilovadonekaloxakerukukor.pdf
    • http://lafowesezojo.scienceontheweb.net/7854021548.pdf
    • https://cdn.sqhk.co/badisasi/uJjhjjf/50929684819.pdf
    • http://zuviferufudufa.iblogger.org/discal_cyst_case_report.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://divurar.rf.gd/metaphorical_meaning_in_hindi.pdf
    • http://migisunutejelu.rf.gd/43982945458.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d717.bin
d35dda9bb735cac6bfbf7299698ee13e92af7b7474fb97d9cdc0404257e0a6ee
pdf-font-stream PDF embedded font (sfnt) at offset 0xD717 5132 bytes
font_01_sfnt_off0000e886.bin
55bde35ec40578a21b4b684dd3a68a5a3f6b5d66734825c2824bd5ba2a54fec8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE886 12620 bytes
font_02_sfnt_off00011035.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x11035 4324 bytes