Malicious PDF — malware analysis report

Static analysis result for SHA-256 73167ecbee6fc80e…

MALICIOUS

PDF

80.9 KB Created: 2021-02-26 02:04:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d747e1e975de2471224f9d32d29fa83d SHA-1: 765a5a5c775f049898c973d00408b1f14a77516e SHA-256: 73167ecbee6fc80e3cb1157961f1e2a57c0e06811d8b116b9004e6961faa39bb
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to an audiobook, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=celebration+of+discipline+richard+foster+audiobook PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449766/normal_600692ca862e5.pdfIn PDF document text
    • http://santecmb-sarl.com/ultimate_offroad_simulator_hack_download78z1y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5ff23f9e378a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379854/normal_5fcd8927957f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_60107312a2d2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382793/normal_5fc6f1979d360.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379486/normal_5ffa26e9a2a03.pdfIn PDF document text
    • http://podarokinsta.online/voxoxejelusiy4ihi.pdfIn PDF document text
    • http://shopbest.online/bachelor_of_business_information_systems_in_canadaxdo60.pdfIn PDF document text
    • http://melukutirigap.22web.org/11518624799.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414498/normal_602f338d95a68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499351/normal_5fd94957ca177.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477638/normal_5ffe91adf15dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vedebimefawimad.rf.gd/95076748714.pdfIn PDF document text
    • http://mivarotodu.epizy.com/tijulidemorugufenu.pdfIn PDF document text
    • http://nexopuvesoreben.epizy.com/89975002006.pdfIn PDF document text
    • http://dopodisimedu.epizy.com/tebavotejuvavuzedotuke.pdfIn PDF document text
    • http://kojavigetizafi.epizy.com/animation_movies_hd_tamil_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/sojusalebezidoruwudul.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/does_walmart_sell_honda_transmission_fluid.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9E 5352 bytes
SHA-256: 63a58c1fa8ac14d752a2ed440e96d1f2017e0a462cd1d567c874d5df51f3f7bf
font_01_sfnt_off00010ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBF 11412 bytes
SHA-256: f782a93953b22a979a8ae51cea7fc032df2beb593fe9e40cc70f6b89cf48df1a

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