Malicious PDF — malware analysis report

Static analysis result for SHA-256 40cfe93f2c07c619…

MALICIOUS

PDF

74.2 KB Created: 2021-05-07 08:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f6533c06f2049141aa64e52fd9049e9 SHA-1: df41d66e67cfaab56b1a99fc485f7b1d77d1be40 SHA-256: 40cfe93f2c07c619f95727255c420dcb1835b98f63ddabbbe29fd72a27502032
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to trick the user into visiting a compromised or malicious webpage.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=casio+hr100tm+ink
    • https://cdn.sqhk.co/moturalogupe/2zG07if/netonotedelipuraxotosuva.pdf
    • http://cardioactiveufficiale.site/nejamadujoxilepodujumetasaax44.pdf
    • https://vunepixas.weebly.com/uploads/1/3/1/4/131483778/6958239.pdf
    • https://rediwugozuza.weebly.com/uploads/1/3/1/4/131438197/1230717.pdf
    • http://mastericy-chistoty.ru/87110015114ds574.pdf
    • https://cdn.sqhk.co/zonelatu/siijbje/phone_number_for_closest_t-_mobile_store.pdf
    • http://livecopyrightverification.com/zudavapabe3bi30.pdf
    • https://jixepelisu.weebly.com/uploads/1/3/2/6/132695865/digogo.pdf
    • https://cdn.sqhk.co/jubawiwa/hcjgQje/4600863886.pdf
    • http://ketuzel.22web.org/coco_family_tree_worksheet_spanish.pdf
    • https://cdn.sqhk.co/datolabevev/Uj17jbv/48048844285.pdf
    • https://cdn.sqhk.co/rubuxupab/jcvchc6/mineral_oil_enema_for_impacted_stool.pdf
    • http://muvariwiporiju.iblogger.org/uitzending_bijwonen_formule_1_cafe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ccce630c-4971-4575-ba1d-a8d1c20ff748/harbor_breeze_ceiling_fan_light_kit_cap.pdf
    • http://julipew.rf.gd/larodiselulawazejavozud.pdf
    • https://uploads.strikinglycdn.com/files/bffaf91c-dbc3-4678-aa64-1f002f1a13f3/milwaukee_m18_charger_radio_wont_turn_on.pdf
    • http://revifobatuge.rf.gd/52971990382.pdf
    • http://livukuxuperum.epizy.com/80409916085.pdf
    • https://uploads.strikinglycdn.com/files/15388ca2-8ad4-4ba9-900c-7fde321917da/family_photography_near_me.pdf
    • https://uploads.strikinglycdn.com/files/7c40bbab-f23d-4a58-aaf0-6e154fe24fdc/98914508468.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_off0000e74d.bin
ffb3d925c99a4c47a378aee94a1f2e6bb29f7387dcb40b755622d567b0a25443
pdf-font-stream PDF embedded font (sfnt) at offset 0xE74D 5056 bytes
font_01_sfnt_off0000f84d.bin
3e8f67e5dad2c3cc877175c3fc90f1d0bfb25b039d1098bde0af375e5204734c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF84D 10256 bytes