Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1361a211f31c201…

MALICIOUS

PDF

40.8 KB Created: 2021-03-15 12:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1aa3798a22391744b3f4992395c3127 SHA-1: 31cae7b1155359cc58f968efde33babe3b5b842f SHA-256: b1361a211f31c20128ebe7f8ae7cad2d8309b4a8fdbcb0c9db03f4bed7d10c9a
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and an ML classifier. It employs a common phishing tactic by presenting an image-based lure, likely a screenshot, to entice users to click on an embedded URI. This URI, 'https://jottigo.ru/award?keyword=airlines+code+list+pdf', is suspected to lead to a malicious site for credential harvesting or further payload delivery. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8113

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/award?keyword=airlines+code+list+pdf
    • https://nowujokawaj.weebly.com/uploads/1/3/4/6/134676947/wolosakokemen_gelufovagori_sexalusozajop.pdf
    • http://ziwavabewite.66ghz.com/lovabopobilutigovelex.pdf
    • http://pinixubezanamot.iblogger.org/ics_800b_answers_2018.pdf
    • http://giwitijudaleka.mygamesonline.org/how_to_use_smokey_mountain_weber.pdf
    • https://jonaduxito.weebly.com/uploads/1/3/1/3/131384171/d45d5b3f2d2f88.pdf
    • http://jenerotisa.mywebcommunity.org/kowixevomisar.pdf
    • http://gelupulofevabek.medianewsonline.com/fixovobulagixukamisagilub.pdf
    • http://kigowamukidiba.iblogger.org/amendment_to_lease_agreement_template.pdf
    • https://teguvazotumeli.weebly.com/uploads/1/3/4/0/134041540/kidififetiwejego.pdf
    • https://s3.amazonaws.com/baxegezivumi/chrome_application_for_windows_7.pdf
    • https://s3.amazonaws.com/lepefi/gubazezo.pdf
    • http://jajumuxepuj.rf.gd/maya_angelou_birthday_wishes.pdf
    • http://donijexufenu.onlinewebshop.net/hp_probook_4530s_notebook_pc_energy_star_drivers.pdf
    • http://tapoloferazuziw.atwebpages.com/86328161950.pdf
    • https://s3.amazonaws.com/gozifep/88760168594.pdf
    • http://jijupebibinuwib.rf.gd/13001327470.pdf
    • https://s3.amazonaws.com/remuv/wexalo.pdf

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