Malicious PDF — malware analysis report

Static analysis result for SHA-256 867396899abb0fd7…

MALICIOUS

PDF

71.7 KB Created: 2021-02-18 23:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 98e758b6607e5166bc073878205cddc3 SHA-1: afb99e0c857bfcdc1a760673d854a5af27c7217a SHA-256: 867396899abb0fd75707d8ca9155668bee8cca72a302dbca228f406f8060115c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that, when accessed, likely leads to a phishing or malware distribution site. The document body, though partially obfuscated, suggests a lure related to vehicle mechanics to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=how+to+engage+4wd+with+locking+hubs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421630/normal_601e50f0cbecf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471988/normal_5fedd16ade58b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452154/normal_5fc663fa55c7b.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/lifidJf/vexelafawuge.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/idIggB8/tisalufapupinelivi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465949/normal_5ff5e339f11d2.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/ighldGh/baby_growth_chart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504791/normal_601a19bf0a6cc.pdfIn PDF document text
    • http://pojopazutapo.iblogger.org/digital_business_card_maker_pro_apk.pdfIn PDF document text
    • http://apsdd54gfv.xyz/begepasam4pfxa.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/8jjC0ia/vuluragelavumejikozebe.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/fje1Kij/beyblade_burst_rivals_mod_apk_2._8._1.pdfIn PDF document text
    • http://datinge.site/china_moon_moviea556p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wujodibu/vagalume_baixar_musicas_gratis_s.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/92901319696.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/beholder_full_version_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/browsing_lemot_di_android.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_off0000db71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB71 5448 bytes
SHA-256: beb42643da8d7c984bb3ce83359e7a4cd420695a790569b44857fbc03c74bf90
font_01_sfnt_off0000ee17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 10328 bytes
SHA-256: 4d37834ddf9e52b9cf8c8d412d724ea057def6771f281458dab8488da2252b8c

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