Malicious PDF — malware analysis report

Static analysis result for SHA-256 8460be1dca610e3b…

MALICIOUS

PDF

85.1 KB Created: 2021-03-29 04:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a1c8f63ea3d92d3bbd69e9c362ff6f9c SHA-1: 745335a0c87cfe7d804a4696a922005eb1c8d277 SHA-256: 8460be1dca610e3bcfb813aa55276e181ac7e32b571afc725fa0d6914dcfd193
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=mach3+cnc+manual PDF link annotation
    • https://zirofapenepag.weebly.com/uploads/1/3/4/8/134855920/7169074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413239/normal_602ab2f2d7352.pdfIn PDF document text
    • https://wojaduzojipoj.weebly.com/uploads/1/3/4/4/134467580/7dc3f1bf3f.pdfIn PDF document text
    • http://mritzoliver.design/mckinsey_valuation7bvqb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393044/normal_5fee8721537e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_6035c8d361b13.pdfIn PDF document text
    • http://sikazigazes.mypressonline.com/guxenedib.pdfIn PDF document text
    • https://kanodofeju.weebly.com/uploads/1/3/5/3/135325650/vawobopafokimadela.pdfIn PDF document text
    • https://fixemebipufuw.weebly.com/uploads/1/3/4/1/134131586/50be6c4eafc18a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471467/normal_603be2a5111bc.pdfIn PDF document text
    • https://xavidupi.weebly.com/uploads/1/3/4/7/134723560/2620837.pdfIn PDF document text
    • http://good-production16.site/37971596876a0739.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_604bc4e6c34c1.pdfIn PDF document text
    • https://putigored.weebly.com/uploads/1/3/0/7/130738503/1593447.pdfIn PDF document text
    • http://pexawegowe.mywebcommunity.org/apache_hadoop_tutorial_for_beginners.pdfIn PDF document text
    • http://magnifioco.site/nagakigetw75j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/baxunaf/n23h22nh3_bond_energy.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/temilipusukigima.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/how_to_beat_android_21_evil.pdfIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/wusepu.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/girumuzeruval.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/calendar_2019_november.pdfIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001058c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058C 4460 bytes
SHA-256: a97a784148a3d5a98c004c2985e86e91556f07adea8e2f079f0a02ac3a7199a9
font_01_sfnt_off0001146b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146B 10872 bytes
SHA-256: 831259deafe09657bfd5ab93f76817b7c139065c03704ef80aba155bfa85220e
font_02_sfnt_off00013954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13954 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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