Malicious PDF — malware analysis report

Static analysis result for SHA-256 1810ebffdfc61c3d…

MALICIOUS

PDF

76.7 KB Created: 2021-03-31 12:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2d1b8edf1102cdd73f11d6a39dc8c69 SHA-1: 7eed5cdb2710709a41d34bd3573dfe784f7a2de3 SHA-256: 1810ebffdfc61c3dfae69991d7151e191c1ff0eb58edc13c63ac4929d66134d8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or phishing content. The presence of multiple suspicious URLs further supports the phishing or malware distribution attack pattern.

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://ponafet.ru/wix?keyword=escalation+protocol+drops+june+2020
    • http://es50off.pro/hornady_125_gr_fmj_300_blackout_load_datau7qnp.pdf
    • http://eeeeeyyy.space/vifiwiniveliluna7mk6k.pdf
    • http://smartycredit.info/49547277583cwwb2.pdf
    • https://static.s123-cdn-static.com/uploads/4380695/normal_5ffb92253bb85.pdf
    • https://cdn-cms.f-static.net/uploads/4379854/normal_6045e131ed41d.pdf
    • http://idealsit.space/test_of_divisibility_worksheets_for_grade_468520.pdf
    • https://static.s123-cdn-static.com/uploads/4476434/normal_5fcd3faa7cfed.pdf
    • http://jabodaligononu.iblogger.org/vlookup_from_another_sheet_in_same_workbook.pdf
    • http://torchqbfl.fun/washington_dc_museums_sunday_hoursht3pc.pdf
    • http://verifedform.com/address_his_concernsy4znb.pdf
    • http://znalomstvavip.site/kizokixutulibijuseytp5r.pdf
    • http://dujalubudekir.22web.org/mla_citation_format_translated_book.pdf
    • https://cdn-cms.f-static.net/uploads/4408981/normal_601555639ba6c.pdf
    • http://naturfresh.fun/literature_quiz_and_answersqzce9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zevutebulaworel/sajunilekisisexurokatig.pdf
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_275d93ef8f5d42f899fcbd13b940d9a2.pdf?index=true
    • https://891dfe3a-8969-4df2-b253-5ccc4ebbb7a0.filesusr.com/ugd/e66789_f8980d9c558c451eac593ba17ab56b91.pdf?index=true
    • https://s3.amazonaws.com/semuxemakaw/95554529784.pdf
    • http://menufuvaso.rf.gd/homelite_330_chainsaw_bar_and_chain.pdf
    • https://s3.amazonaws.com/xovajukoxin/forest_bharti_2019_maharashtra.pdf
    • https://s3.amazonaws.com/jobavo/aankh_mare_mp4_hd_video.pdf
    • http://zofikexegugimum.rf.gd/80450978652.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_off0000eac5.bin
cc21fe50721ea199c20b6e51b03920ce63523e946df3bc892cbcb0e7c9235494
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC5 5376 bytes
font_01_sfnt_off0000fd23.bin
aaa21275960e5cb8ed26ecf67b75c89a6ca54b3231caf36e6a6cb2fa75500ea8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 12628 bytes