Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a2f61fa42062ce…

MALICIOUS

PDF

76.1 KB Created: 2021-04-03 19:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3a085e7d0feb07bf776286caa7377c9 SHA-1: 97263e6ba654ebaba6278e30dc221ba2a01c28bf SHA-256: 30a2f61fa42062ce939cb2b07be03870dc0947052b4774b0b840273bc4c375c3
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site or download further malware. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit user interaction for malicious purposes.

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://jacksth.ru/strik?utm_term=books+for+couples+to+read+together+for+fun
    • http://tinipen.medianewsonline.com/filimevobujeforerugefi.pdf
    • https://cdn-cms.f-static.net/uploads/4475987/normal_602604e5c28be.pdf
    • https://cdn-cms.f-static.net/uploads/4451220/normal_605dc528288c4.pdf
    • http://tuwatolu.22web.org/28957010217.pdf
    • https://vowabogebem.weebly.com/uploads/1/3/0/7/130775978/butaxexawaxuk.pdf
    • http://lunesygets.xyz/95703340273guidr.pdf
    • http://mebovaduzi.mywebcommunity.org/central_telefonica_panasonic_kx_tes824.pdf
    • http://defokozixeral.sportsontheweb.net/82117623806.pdf
    • https://cdn-cms.f-static.net/uploads/4476938/normal_600c979965882.pdf
    • https://potomifor.weebly.com/uploads/1/3/4/3/134332951/5663380.pdf
    • http://osummer.space/38140230042cksj9.pdf
    • http://netlysy.online/why_i_wrote_the_yellow_wallpaper_by_charlotte_perkins_gilmanf6u88.pdf
    • https://cdn-cms.f-static.net/uploads/4427519/normal_6027fd605c848.pdf
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/de9a86b04.pdf
    • https://remitibomuko.weebly.com/uploads/1/3/4/8/134853657/33139a28.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/punurum/quotes_on_importance_of_alternative_energy_sources.pdf
    • http://bifapekedareb.rf.gd/lodofiwib.pdf
    • http://tafinefonekon.rf.gd/45235199435.pdf
    • https://s3.amazonaws.com/najipavez/wubon.pdf
    • http://sogivuwe.onlinewebshop.net/72058658171.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddff.bin
de8f3b8b512ceebb4405acb6e0f12906536094abb8415c195edad95410aba102
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFF 5364 bytes
font_01_sfnt_off0000f033.bin
00fe44dfcdcc3fc446360d2fd94d13e383af5267879a47bf7df0cc17925aa814
pdf-font-stream PDF embedded font (sfnt) at offset 0xF033 10268 bytes
font_02_sfnt_off00011336.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x11336 4324 bytes