Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ed037beb04f4bf…

MALICIOUS

PDF

72.7 KB Created: 2021-02-07 05:14:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 68c93cb0606699a4d57c6f49c0443ac9 SHA-1: a9c283990b25fb2a6daacecda3150b6ae11789ca SHA-256: 80ed037beb04f4bf4a8ed0d009b4a6cf5dc2a5bc0a4599470668f9373c680a58
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to trick the user into visiting a malicious site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Best buy mobile la crosse wi'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=best+buy+mobile+la+crosse+wi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420600/normal_6002c51ce6b91.pdfIn PDF document text
    • https://kogevinipuban.weebly.com/uploads/1/3/4/5/134514077/4117522.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479932/normal_5fe3986e37f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_6019b10be1987.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391909/normal_5fc73f557f122.pdfIn PDF document text
    • https://vevumugenewasu.weebly.com/uploads/1/3/0/7/130776279/1567f.pdfIn PDF document text
    • https://sotemupavunu.weebly.com/uploads/1/3/1/4/131413148/dotur.pdfIn PDF document text
    • https://fiwudarive.weebly.com/uploads/1/3/0/7/130775392/duzupodomupuj_pilugonod_xesuxuja_xemaje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478961/normal_5ff7f37a131e6.pdfIn PDF document text
    • http://studyweb.site/ppsspp_naruto_ultimate_ninja_impact_emuparadiseisken.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414352/normal_5fce8aad44b5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371524/normal_5fd204a856885.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370072/normal_60074d7252f9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410000/normal_5fe3c29e8e048.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/jeromopelurab/53654927652.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/colorado_river_fishing_report_austin_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/tektronix_2430a_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/funawulokezemazamiw.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/free_wedding_slideshow_template_powerpoint.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_off0000c8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C1 5104 bytes
SHA-256: bc5352d31436a4ae1f79d27f2f3e1a068a3e9cca2e31efe43e79ceedbd56d0ae
font_01_sfnt_off0000da32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA32 14652 bytes
SHA-256: a06797fe9dec05d421ed73e8c5411d12762529ea832f5402ecb785f7f69f64f7
font_02_sfnt_off000107cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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