Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb5b05ca80b79bf…

MALICIOUS

PDF

160.1 KB Created: 2021-04-19 15:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d472b3677baeafdb8df8f52590c23c7d SHA-1: ae25c18a2872ee3c9225afacb964f4db608deffc SHA-256: 0eb5b05ca80b79bf92e4a60aa624cd12556458b75c67a0883ae24631f27f5548
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://zajinet.ru/strik?utm_term=troy+bilt+string+trimmer+will+not+start', is suspicious and likely serves as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://zajinet.ru/strik?utm_term=troy+bilt+string+trimmer+will+not+start
    • https://naweviwezufas.weebly.com/uploads/1/3/1/8/131856142/3364669.pdf
    • http://mojipasi.22web.org/51359956830.pdf
    • https://cdn-cms.f-static.net/uploads/4373768/normal_602ea204bfd7f.pdf
    • http://vipadobotisituz.mygamesonline.org/blank_world_map_printable.pdf
    • https://rixulajo.weebly.com/uploads/1/3/4/5/134585814/dufarujugevod_xajaf_nuzofidimanol.pdf
    • https://cdn-cms.f-static.net/uploads/4465151/normal_6058f06cdd6ee.pdf
    • https://cdn-cms.f-static.net/uploads/4385648/normal_602731bc2eb89.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kipawewori.epizy.com/45276178253.pdf
    • https://s3.amazonaws.com/laginekux/ford_mustang_consumer_reports.pdf
    • http://zosajirigo.rf.gd/channel_tunnel_freight_latest_information.pdf
    • http://pazosikubune.epizy.com/35337253828.pdf
    • http://mupefapakag.rf.gd/jolowogewegibobek.pdf
    • https://s3.amazonaws.com/dudujopixejikug/how_to_find_the_supply_and_demand_functions.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/49279917252.pdf
    • http://wadoromutisagar.myartsonline.com/jbl_flip_3_firmware_update_mac.pdf
    • https://s3.amazonaws.com/biwubeleba/98244181605.pdf
    • http://pufufatorum.epizy.com/comptia_a_1001_study_guide.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000220c0.bin
32c10e2d57412d08cbaccd2f9de4d305cc64d9bc8ffaa9d60477843d77f15819
pdf-font-stream PDF embedded font (sfnt) at offset 0x220C0 5288 bytes
font_01_sfnt_off000232bc.bin
3c294ee1c06d7fca9ac74d00c4692fba9590b8e7ebe152fc32a20e98ae141681
pdf-font-stream PDF embedded font (sfnt) at offset 0x232BC 12228 bytes
font_02_sfnt_off00025c75.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0x25C75 16204 bytes