Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a32d737cda0e3a…

MALICIOUS

PDF

82.4 KB Created: 2021-03-20 16:22:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63bf5a145388c8320bf6380c49c5f4c0 SHA-1: 7aead54ea5b29d8174dc1ddb61386aeeebd4098b SHA-256: c3a32d737cda0e3a8f1bcdc330c5181567f2a0de45c6871ea5e95f187fbcd875
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a product sale, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/aws?utm_term=hpi+savage+x+4.6+engine+for+sale
    • https://cdn-cms.f-static.net/uploads/4401517/normal_6041c115b9fc0.pdf
    • https://cdn-cms.f-static.net/uploads/4488137/normal_5fd62b1808905.pdf
    • https://cdn-cms.f-static.net/uploads/4444117/normal_60468189de9c8.pdf
    • http://gabasikekapubul.iblogger.org/15490976970.pdf
    • http://kosamaritaj.getenjoyment.net/anatomy_for_sculptors.pdf
    • https://cdn-cms.f-static.net/uploads/4489251/normal_5fd9ff456cebd.pdf
    • https://cdn-cms.f-static.net/uploads/4390382/normal_603f90fbce897.pdf
    • https://cdn-cms.f-static.net/uploads/4485450/normal_5fd3dda644b21.pdf
    • http://kuzexamipapoxip.medianewsonline.com/aberdare_cables_catalogue.pdf
    • http://jawazapefaxuzit.mywebcommunity.org/past_simple_regular_verbs_games.pdf
    • https://cdn-cms.f-static.net/uploads/4408186/normal_60526d9475d7e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/luborinizu/instagram_number_fonts_free.pdf
    • http://nigagemi.rf.gd/glittering_cave_guide.pdf
    • https://uploads.strikinglycdn.com/files/3d170243-e11e-4d56-b696-f8ce27edabb2/kadadozemalanewejimeto.pdf
    • https://s3.amazonaws.com/xoguwavosuje/sewumod.pdf
    • http://zafurug.epizy.com/60825481164.pdf
    • http://keligidi.rf.gd/how_to_make_a_haier_mini_fridge_colder.pdf
    • https://uploads.strikinglycdn.com/files/cf1ebd96-52c6-4b5a-a360-5e24adbd2dad/travel_and_leisure_bucket_list.pdf
    • https://uploads.strikinglycdn.com/files/a6bdf01a-9536-451c-b01c-68836b222004/78693391510.pdf
    • https://uploads.strikinglycdn.com/files/c26a6415-a7e7-4b75-9639-0f934f893b56/50729624517.pdf
    • https://uploads.strikinglycdn.com/files/7148e2ad-37da-4fc4-b80c-39a94d873a46/where_can_i_buy_a_10_dunkin_donuts_gift_card.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_off0001042c.bin
139b14f626f64990bb988216a3e461f9586ed3db27aeb6a80e3119155ac44dbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x1042C 5432 bytes
font_01_sfnt_off000116d4.bin
c0ff1ab52c4ac841f376c2a9d5d731b5aa14f3dd69438dec9d679126148b966d
pdf-font-stream PDF embedded font (sfnt) at offset 0x116D4 10860 bytes