Malicious PDF — malware analysis report

Static analysis result for SHA-256 458ca5aa106cac17…

MALICIOUS

PDF

99.1 KB Created: 2021-03-20 16:57:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 421a3ef0cb580ba70750111c68b70221 SHA-1: dcaeb2aa6c734d8091161f95442683994137365b SHA-256: 458ca5aa106cac178f735690870c43d3458977e3bdefabfd65a550fc2abf8cb9
136 Risk Score

Malware Insights

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

The sample was identified as malicious by a machine learning classifier and ClamAV, with heuristics indicating an advance-fee scam lure. The document contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and heuristics suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/aws?utm_term=functional+programming+in+python+amazon
    • https://cdn-cms.f-static.net/uploads/4453115/normal_601ba87131274.pdf
    • http://particulieres-societegenerale.best/6010619645zdrbh.pdf
    • https://cdn-cms.f-static.net/uploads/4392861/normal_604187256e09a.pdf
    • https://cdn-cms.f-static.net/uploads/4370267/normal_602d957e5acde.pdf
    • http://secureappeal.com/kaxirudateletuktvdc.pdf
    • http://kokusurajiguz.22web.org/wegowebunegovalo.pdf
    • https://xobisopi.weebly.com/uploads/1/3/1/3/131379629/femuwukaw.pdf
    • http://moreprodukti.com/35700510983hsaxc.pdf
    • https://static.s123-cdn-static.com/uploads/4500201/normal_6005f5873c23b.pdf
    • https://joxuripuziw.weebly.com/uploads/1/3/4/2/134266010/dinejarobajisowon.pdf
    • http://limecash.xyz/zigixerivorafenisidapovopjsrq8.pdf
    • https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/18033.pdf
    • http://xodaxobomefawod.iblogger.org/abirami_anthathi_with_meaning_in_tamil.pdf
    • http://girlsbeach.space/grohe_shower_tap_parts0uewu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/diwitapezu/drill_down_report_means.pdf
    • http://gadudadu.rf.gd/37305672758.pdf
    • https://s3.amazonaws.com/kovozenamofox/tuzidasunirutefobebuj.pdf
    • https://s3.amazonaws.com/ganubatebedoxez/lennox_slp98uh_error_codes.pdf
    • https://s3.amazonaws.com/jolozidabi/can_i_use_my_iphone_as_a_universal_tv_remote.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_off000148b3.bin
29ce15810cf4a76ef7f1f34dd861902b4c91b8f1df921b3e31d5a07aaf66ae76
pdf-font-stream PDF embedded font (sfnt) at offset 0x148B3 5276 bytes
font_01_sfnt_off00015a90.bin
ecdbe9f6b4ae0d6f643f24a49ca021682f289a06c140d22ef7204d16f53c39fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x15A90 10828 bytes