Malicious PDF — malware analysis report

Static analysis result for SHA-256 12242abb0b59c821…

MALICIOUS

PDF

76.1 KB Created: 2021-03-23 09:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1d968c51bd60ec95b5aaf9898866ddd SHA-1: 274e1396ae404556380be7f4a44378be87812d91 SHA-256: 12242abb0b59c8216c5b124c8f5e43067c06e5bbcb08caf3ccc641103c3a7d4d
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to templates, likely intended to trick users into downloading a malicious payload from the provided URL. No scripts were extracted, but the presence of embedded URLs and the high ML score indicate a phishing or malware distribution attempt.

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://lozipotod.ru/123?utm_term=bullet+background+paper+template+word
    • http://nituzovido.getenjoyment.net/24528276715.pdf
    • https://cdn.sqhk.co/bodorosuzuta/bhiRmij/train_taxi_download.pdf
    • https://cdn-cms.f-static.net/uploads/4410703/normal_603754ef645dc.pdf
    • https://cdn.sqhk.co/sosexazefip/eihiiic/smash_champs_mod_apk_android_1.pdf
    • https://cdn-cms.f-static.net/uploads/4376379/normal_6013eee769bc1.pdf
    • http://punavuvipufov.sportsontheweb.net/48843964870.pdf
    • http://fijazubelanulek.mywebcommunity.org/jexaninidefube.pdf
    • https://cdn-cms.f-static.net/uploads/4379363/normal_600f7d7819033.pdf
    • https://cdn-cms.f-static.net/uploads/4471082/normal_5fd6375218254.pdf
    • http://xufamorazogubov.sportsontheweb.net/72441031484.pdf
    • http://kakorixow.mygamesonline.org/73060909665.pdf
    • http://fimewovoko.getenjoyment.net/algebra_2_common_core_holt_mcdougal.pdf
    • https://cdn.sqhk.co/delopomixaba/heWbjxR/stack-_based_buffer_overrun_c.pdf
    • https://cdn.sqhk.co/kunimanujage/n1igHhb/sound_effects_board_chrome.pdf
    • https://cdn.sqhk.co/nanagajog/MVSTiji/volelajupi.pdf
    • https://static.s123-cdn-static.com/uploads/4404123/normal_5fc8a1699257d.pdf
    • https://cdn.sqhk.co/bikegola/ngijjYb/asmr_soap_carving_3.pdf
    • https://cdn.sqhk.co/joxomawezu/oihFhgm/83262386643.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xowuzaxu.onlinewebshop.net/botany_practical_book_for_msc.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_off0000e89c.bin
54176eb0e40602acce264705b16def967eb52161a37e5bfeef6b72854a17e057
pdf-font-stream PDF embedded font (sfnt) at offset 0xE89C 5560 bytes
font_01_sfnt_off0000fb82.bin
25a2dba3913a65b9e4a813adcac3f679ea64925b1ca23e64b66be71175e15683
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB82 11332 bytes