Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ea46bc5dd6e5e4…

MALICIOUS

PDF

72.7 KB Created: 2021-02-20 21:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3a19e2307e016f8fed80c7f324748e42 SHA-1: 43bfbc76dee46bb55cf22d476fe0792c2abbd06c SHA-256: 12ea46bc5dd6e5e471c9cd85ee6556c1aeb163fcf0b72171c4055ba47c32fcb2
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 URI pointing to 'baarspo.ru', which is likely a malicious domain used to host phishing content or distribute further malware. The document body, though heavily obfuscated, suggests a lure related to microwave repair, a common tactic for phishing scams.

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://baarspo.ru/123?utm_term=what+to+do+when+your+microwave+is+not+heating PDF link annotation
    • https://cdn.sqhk.co/kozuvurop/gggBjjP/38986385575.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/iiMheqs/9186573073.pdfIn PDF document text
    • https://cdn.sqhk.co/luxixumogez/hfhawgc/3073724795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452217/normal_5fc627e44b30b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444622/normal_60144b62302bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_6016e16d37a56.pdfIn PDF document text
    • http://mikiduvedopavu.22web.org/double_digit_multiplication_worksheets_grade_4.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/vigevot/63371715646.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/payroll_budget_template_excel_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/ambarsariya_punjabi_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/42793024124.pdfIn PDF document text
    • http://jinibodakix.epizy.com/zisavozobijuludak.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/doboraxexixasixuxur.pdfIn PDF document text
    • http://dadorisisewane.epizy.com/architecting_a_big_data_platform_for_analytics.pdfIn PDF document text
    • http://suvapik.epizy.com/wikoselomizafitevaseka.pdfIn PDF document text
    • http://jopodovijub.rf.gd/nasabadebatefalatawunaw.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/ninukizak.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/textbook_of_biochemistry_for_dental_students.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/85050797036.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/rasimarazedederukibew.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_off0000dca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA5 5588 bytes
SHA-256: a5b47623e76ce16bce02a432dedabda221b781cf4960d875e0e42550ef74d177
font_01_sfnt_off0000efa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA0 10976 bytes
SHA-256: 4180cb57e43b8de3ee21846a310e4fd8e58a8975cdf705bdd503d4dc44c6bd80

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