Malicious PDF — malware analysis report

Static analysis result for SHA-256 6522146290da264e…

MALICIOUS

PDF

197.6 KB Created: 2021-03-10 12:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c104b4c36298095223a61e87fdefe6e6 SHA-1: 8b72dbd674469301e4cc6ae1b9372e36f9cfaad4 SHA-256: 6522146290da264e5b9d9705ccff4282bcd462fa2173b7b8695691c2dbf159d1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of an external URI and the overall detection suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7177

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=phonetic+alphabet+chart+speech+pathology PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378390/normal_60418141df942.pdfIn PDF document text
    • http://xolokeminapi.getenjoyment.net/21338551150.pdfIn PDF document text
    • http://yazansoft.com/7625134926lqvp1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389792/normal_6014812218561.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/zt3geja/puppy_wallpaper_hd_1080p_free_download.pdfIn PDF document text
    • http://mazafaka69pussy.online/burning_wheel_rpgykyux.pdfIn PDF document text
    • http://opensoda.pro/gubaretumifoguvizitazogexu2gck.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485699/normal_5fd5f9ee44567.pdfIn PDF document text
    • http://xbet1.fun/davaxphy65.pdfIn PDF document text
    • http://7gusevshop.website/barske_stolice_forma_ideale06bh8.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/fwfjhtk/25403881957.pdfIn PDF document text
    • https://cdn.sqhk.co/ravusigi/idSnjaJ/42304387896.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vobikeretuwof.atwebpages.com/how_to_calculate_building_costs.pdfIn PDF document text
    • https://7133fc40-0b9c-4701-b953-e7fafc934b44.filesusr.com/ugd/70a38d_7f9bd033028b45549d12e667f7eb6796.pdf?index=trueIn PDF document text
    • https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_d2acad61708643b48837b0fe7c07dcd1.pdf?index=trueIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_14f3c37aa3aa46e09441dba7d045209d.pdf?index=trueIn PDF document text
    • https://eecb1da5-82b7-48ef-90e5-6a20895c07e7.filesusr.com/ugd/88a84f_c5aa6bbb8e494db081bf833ad6aeb878.pdf?index=trueIn PDF document text
    • https://4993f9ff-345c-4c03-a8ec-d4f8dac664d6.filesusr.com/ugd/debbe1_27d697522db64d5fbba3df191c725fc4.pdf?index=trueIn PDF document text
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_1bdad2c027724466b073b8ede14fe9b0.pdf?index=trueIn PDF document text
    • https://1237a3da-0b33-4890-9ba9-974507bf2590.filesusr.com/ugd/3e0cb9_8527bc4a18ec4180a812edf87588f77f.pdf?index=trueIn PDF document text
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_537fde113ba14104933f8eaeff8ad89d.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23BBE 6512 bytes
SHA-256: 67776207ee821bb505bfad7396eeb9b4c56feb23d18b4c29118c0945d4bc7694
font_01_sfnt_off00024b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24B8B 2912 bytes
SHA-256: f1585241b59a1002e627af24859d8bddc2a41f5101ead6a7a290360bc82d6b36
font_02_sfnt_off000255f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x255F0 5440 bytes
SHA-256: e25c95fb1aa0781b3edac230a9392f5907969ce0af7ecaa8fd25ac70357bf203
font_03_sfnt_off00026864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26864 2456 bytes
SHA-256: 4b2090b07e23b251631bf7e8320b4a118862f04052ab0f516796f69b83a55336
font_04_sfnt_off0002737b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2737B 37816 bytes
SHA-256: 0ec639014703fd13e72f3780e492f9df78e347ef3e7736ee64616103f50abf36
font_05_sfnt_off0002de47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE47 17004 bytes
SHA-256: dafce97b0cc486af3adc9f662fccd8c8a9fa61b545258f84daea56830d356986
font_06_sfnt_off0002f663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F663 6240 bytes
SHA-256: e38eff8a76a56e7d4e13588bd43ade2ccf6349378949f09035a46cdd0cf127d2