Malicious PDF — malware analysis report

Static analysis result for SHA-256 975eca611875f181…

MALICIOUS

PDF

75.0 KB Created: 2021-04-04 22:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4285dcb1e1b7911a7082f1416e2c0acc SHA-1: 9417800d7f56698c155b8135764fa3a95c33e992 SHA-256: 975eca611875f181011609fb49248a4fad647573152890f882b8bfc25373e3b8
96 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document 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, though heavily obfuscated, appears to be a lure related to common computer issues, aiming to trick users into clicking the malicious link.

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://pelibifir.ru/strik?utm_term=why+is+my+computer+not+loading+certain+websites
    • http://mizagoride.iblogger.org/dogubekikomoj.pdf
    • http://zilamuro.medianewsonline.com/74638842389.pdf
    • https://cdn.sqhk.co/gozawelesutu/4gijjih/83743064840.pdf
    • http://bajigesupin.iblogger.org/the_usefulness_of_useless_knowledge_download.pdf
    • https://cdn.sqhk.co/juzosugun/khjiigc/group_photo_maker_app_download_apk.pdf
    • http://suporefebakibur.mygamesonline.org/27341913151.pdf
    • http://peregukejipesa.iblogger.org/gefomixifulevodenopu.pdf
    • http://jesofoma.getenjoyment.net/why_is_my_dishwasher_not_draining_properly.pdf
    • http://depafelevan.22web.org/zubagunigajenako.pdf
    • http://nokiwurugibub.mypressonline.com/kexulasurov.pdf
    • https://cdn.sqhk.co/nuxezitowefi/djdhbjg/wekuja.pdf
    • http://bowejuponiwoz.iblogger.org/57542598213.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/df6d2f65-f9a1-4f1d-81f9-ad765f71e003/what_is_dean_ornish_diet.pdf
    • https://uploads.strikinglycdn.com/files/ea200291-3112-4a90-b26b-00c4682381bc/hot_springs_sovereign_ii_parts_list.pdf
    • http://nejimafalun.onlinewebshop.net/is_moto_e5_a_good_phone.pdf
    • https://uploads.strikinglycdn.com/files/8dfe5bf6-5f82-4ee0-b913-1452bdbf2987/danby_countertop_dishwasher_manual.pdf
    • http://naxepedawizozet.onlinewebshop.net/34772437078.pdf
    • http://jotudokizer.onlinewebshop.net/newer_antimalarial_drugs.pdf
    • http://zadiriraki.epizy.com/93470663245.pdf
    • http://volenivojox.epizy.com/gajufelozani.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_off0000e698.bin
6d2a71d2ecddf520630d61728b3ed2176a576c705d0b79656bdbabc98f85301e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE698 5832 bytes
font_01_sfnt_off0000fa66.bin
0a9619adb26503f3a4ba68f193520cbeb6079b7efeb139993b5d2a433de48c7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA66 10496 bytes