Malicious PDF — malware analysis report

Static analysis result for SHA-256 044444f7933cdf78…

MALICIOUS

PDF

76.6 KB Created: 2021-03-27 17:29:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56c58a83193ef9d6153f3837a97786bb SHA-1: db218585c7283019a07a8618a6a9d58b2a9f74db SHA-256: 044444f7933cdf789c0351776f7619cfc27c883a3e609e719526215e8afb4110
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'collaborative problem solving approach pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/award?keyword=collaborative+problem+solving+approach+pdf
    • https://cdn.sqhk.co/linidivez/twhiahd/at_t_u-_verse_tv_u200_latino.pdf
    • https://kawotubizon.weebly.com/uploads/1/3/1/8/131871780/nemozifunevuge.pdf
    • http://waparudadip.mywebcommunity.org/werewolves_of_millers_hollow.pdf
    • https://static.s123-cdn-static.com/uploads/4426541/normal_5fdf9a74f2ad7.pdf
    • https://xizoxapuxuraxe.weebly.com/uploads/1/3/4/5/134598133/wobajanazuwesiv.pdf
    • https://static.s123-cdn-static.com/uploads/4489850/normal_5ff3423607ff0.pdf
    • http://supusatode.sportsontheweb.net/afrikaanse_verklarende_woordeboek.pdf
    • https://cdn.sqhk.co/vexedobasof/fgjd9jc/73871008571.pdf
    • https://vafarisitoguv.weebly.com/uploads/1/3/0/8/130874489/c4394ad.pdf
    • https://static.s123-cdn-static.com/uploads/4377642/normal_5fcc939c5a0ad.pdf
    • https://static.s123-cdn-static.com/uploads/4382627/normal_5fc7965793975.pdf
    • https://cdn.sqhk.co/poxufape/ijghjjb/takeout_food_restaurant_near_me.pdf
    • https://cdn.sqhk.co/xaselavub/gRtqhcO/refubizemevijepulixef.pdf
    • http://virivuluk.getenjoyment.net/an_introduction_to_algebraic_structures_landin.pdf
    • http://wutanumijejol.sportsontheweb.net/88927351526.pdf
    • https://pabaxugu.weebly.com/uploads/1/3/2/6/132695470/bexoxisokix_duwudexaxon.pdf
    • http://xonejalevesezom.sportsontheweb.net/gejala_cacar_air.pdf
    • http://rusadezebep.mygamesonline.org/58678244428.pdf
    • https://cdn.sqhk.co/tivanosox/ShfZid7/android_radio_car.pdf
    • http://nemosixumeki.mypressonline.com/add_watermark_adobe_pro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4c77923f-3ff0-43ea-8a4d-501b748c0cc3/82795834157.pdf
    • https://uploads.strikinglycdn.com/files/3a1d5168-4720-47db-80a0-4a7e8980d485/jiwexogepamakepoj.pdf
    • https://uploads.strikinglycdn.com/files/56551eea-11e6-4079-900c-5e5123b858aa/semapa.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_off0000ed74.bin
29177abd2287e27d5a93fe4bf7d7031f54fc350a83e1f570a6f8b419d122a4de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED74 5676 bytes
font_01_sfnt_off00010095.bin
593008cabc4258f8da900e763278622c44cf179af6fe7a42adea922b2905c417		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10095 10684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.