Malicious PDF — malware analysis report

Static analysis result for SHA-256 95096406b388573b…

MALICIOUS

PDF

76.5 KB Created: 2021-05-14 23:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64e59c02acfc671ea8a4b6d73ea1b2e5 SHA-1: 35f0a5154445b9ddd1152d4855e9eea3fec31ae9 SHA-256: 95096406b388573b22c2d021a1080c68c3128db00604a55805129228c6a723fe
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by both a machine learning classifier and ClamAV. It contains an embedded URL pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site for phishing or to download further malware. The document body is heavily obfuscated, but the presence of the external URI and the overall detection suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9775

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://jottigo.ru/strik?utm_term=2005+jeep+grand+cherokee+error+code+p0700
    • https://cdn-cms.f-static.net/uploads/4467936/normal_5fd10ee8dcae3.pdf
    • http://alexandreablog.com/2007_chevy_impala_ss_battery_replacementw5ewa.pdf
    • https://cdn-cms.f-static.net/uploads/4409606/normal_602a843ac7d47.pdf
    • http://helplnstagramoffice.com/putawizibewotafemofirajemvk3i.pdf
    • https://cdn-cms.f-static.net/uploads/4479222/normal_6039b94dd43be.pdf
    • https://cdn-cms.f-static.net/uploads/4458125/normal_606b48f311043.pdf
    • https://cdn-cms.f-static.net/uploads/4372086/normal_606461036b44b.pdf
    • https://cdn-cms.f-static.net/uploads/4446496/normal_601b61d0caa5b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sutawowirosuvuv/rube_goldberg_simple_machines_worksheet.pdf
    • https://s3.amazonaws.com/sesafefanulokam/46938992868.pdf
    • https://uploads.strikinglycdn.com/files/4f8bb46a-1630-47af-bec4-d7e5b5995b3a/esa_essential_facts_about_the_computer_and_video_game_industry.pdf
    • https://s3.amazonaws.com/rekorewexidiwo/kaththi_coin_fight_theme_song.pdf
    • https://s3.amazonaws.com/wanalovum/caustic_drain_cleaner_safety_data_sheet.pdf
    • https://uploads.strikinglycdn.com/files/c2ba944f-65c5-42ed-b191-e803275f296e/teach_yourself_cognitive_behavioural_therapy.pdf
    • https://s3.amazonaws.com/wuzalugiseto/darebex.pdf
    • https://s3.amazonaws.com/fasudikek/360_anti_virus_app_free.pdf
    • https://s3.amazonaws.com/kuboki/barriers_to_learning_and_development.pdf
    • https://uploads.strikinglycdn.com/files/fcecff3a-0b2e-4c80-9a89-f4985accbf68/when_will_kerbal_space_program_2_release.pdf
    • https://uploads.strikinglycdn.com/files/975c4f6c-205a-4850-8aa3-f9ac709eade0/10636104453.pdf
    • https://s3.amazonaws.com/xewamejixolefaj/were_body_doubles_used_in_fifty_shades_freed.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f737.bin
47bb891a7d665dd3aaef387dd1a4c605e098da479cd0c02f2c06ce12f208d159
pdf-font-stream PDF embedded font (sfnt) at offset 0xF737 5648 bytes
font_01_sfnt_off00010a77.bin
e753d68e10de50e6cfa2724cb465612bfff8d51a269584ae90877f267677f2c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A77 11356 bytes