Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc57c95000d35ff…

MALICIOUS

PDF

75.5 KB Created: 2021-03-25 05:52:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 101631db2086734a8685de233d5d594f SHA-1: e360978531f06c8a94fad1cb2b9e4e59b1b881a3 SHA-256: adc57c95000d35ff5ae15d62f792ed70affe6f2a57bb8d41267f0c55f1e03707
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified by the PDF_URI heuristic. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though partially garbled, suggests a lure related to traffic rules, which is a common tactic for phishing or malware distribution. The presence of multiple unknown URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/strik?utm_term=when+backing+out+of+a+parking+space+who+has+the+right+of+way
    • http://podarokinsta.site/93866089952l72k5.pdf
    • http://tugrull.com/chartered_financial_analyst_career_pathrsr2q.pdf
    • https://cdn-cms.f-static.net/uploads/4486552/normal_60550ae26d1dd.pdf
    • https://cdn-cms.f-static.net/uploads/4412582/normal_6013714527902.pdf
    • http://koteyarn.moscow/naxiwejisobizi6uyb0.pdf
    • https://cdn.sqhk.co/bikulatitaxe/haFigiq/95162073940.pdf
    • http://static-start.top/5752840793otvbq.pdf
    • http://sisedema.22web.org/62045582654.pdf
    • https://cdn.sqhk.co/dudurejavir/gVhjeip/fatexefepopivebefere.pdf
    • https://cdn-cms.f-static.net/uploads/4390661/normal_603eccce619b2.pdf
    • https://cdn.sqhk.co/runenuti/vjfrgeb/zopaxuxibe.pdf
    • https://cdn.sqhk.co/tojegaxamox/ijkQdgc/17186572268.pdf
    • http://jenirafona.22web.org/mixules.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/julaxel/android_studio_install_ubuntu_16._04.pdf
    • https://s3.amazonaws.com/tabobujimo/sezeviboximeponanevazer.pdf
    • https://s3.amazonaws.com/zulezov/77567528604.pdf
    • https://s3.amazonaws.com/rujabepifar/free_franchise_agreement_template_australia.pdf
    • https://s3.amazonaws.com/jupevuxirapi/9683721710.pdf
    • http://gajopem.epizy.com/malobalonozofebit.pdf
    • https://s3.amazonaws.com/mejobu/bapozanojafakaned.pdf
    • https://s3.amazonaws.com/nopomewegobij/nigisemubefenenowut.pdf
    • http://duwimufowewis.epizy.com/the_good_the_bad_and_the_ugly_sheet_music_orchestra.pdf
    • https://s3.amazonaws.com/jonora/futixirin.pdf
    • https://s3.amazonaws.com/pipaneku/68456257486.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_off0000e999.bin
a96290f16a8a8efec72c15922a1cfb9ca6d2c42b9a304bdc3868ba7206ff25bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xE999 5656 bytes
font_01_sfnt_off0000fcf9.bin
4a8b56642c1a8db77303d61c66c5d48336ab60a62327d40546db19e4914493f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF9 10228 bytes