Malicious PDF — malware analysis report

Static analysis result for SHA-256 55e27e9e6b097504…

MALICIOUS

PDF

81.8 KB Created: 2021-03-14 18:05:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4be369f622cc76ff6915fc4f819b9e3 SHA-1: d6cbb67178d438c96af358166c16a793fad2787d SHA-256: 55e27e9e6b09750499880837de21d5dc892a3aca38ea0862d210584ed2be9e8e
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 URL that appears to be a lure for downloading game-related content, suggesting a phishing or social engineering attack. No scripts were extracted, but the presence of the malicious URL is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/wix?keyword=papa%2527s+bakeria+to+go+apk+download
    • https://cdn-cms.f-static.net/uploads/4369162/normal_60495327d4614.pdf
    • http://mutujejeturuduf.medianewsonline.com/59946781344.pdf
    • https://static.s123-cdn-static.com/uploads/4450636/normal_5fe52f7373227.pdf
    • https://cdn-cms.f-static.net/uploads/4490949/normal_6041f179cbaa3.pdf
    • http://javaxirivibewi.mygamesonline.org/xejutosenexofinunumari.pdf
    • https://cdn-cms.f-static.net/uploads/4446399/normal_6049e770e2a15.pdf
    • http://tepugorotewole.medianewsonline.com/goxirigafebikizikakenuxi.pdf
    • http://gupirigugorixuf.sportsontheweb.net/avengers_playing_dd_guardians_of_the_galaxy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b2637947-5c8d-4cbb-b7e1-28b72057f146/veruzutuju.pdf
    • https://s3.amazonaws.com/fulazelof/xezegojidar.pdf
    • http://xumuritikoxuk.myartsonline.com/how_many_times_can_you_pump_a_crosman_760.pdf
    • https://s3.amazonaws.com/wujodibu/risk_assessment_template_australia.pdf
    • https://uploads.strikinglycdn.com/files/83d19932-e0b0-438d-925e-a80f040fc33b/how_to_use_a_pampered_chef_stone.pdf
    • https://s3.amazonaws.com/savukojubusum/ronojejuwupojazeva.pdf
    • https://s3.amazonaws.com/rokuwapesu/vawujamifisufu.pdf
    • https://uploads.strikinglycdn.com/files/28189562-e578-41ac-b73f-9c1711cffeea/dungeons_and_dragons_basic_set_1980.pdf
    • https://uploads.strikinglycdn.com/files/e4234dc2-c98e-47a0-8c5e-fe422294a925/dimabebuvabov.pdf
    • http://girofili.myartsonline.com/wogivixunat.pdf
    • https://s3.amazonaws.com/wakuzidi/20480722617.pdf
    • https://s3.amazonaws.com/zuguvoxoki/93895812064.pdf
    • https://s3.amazonaws.com/jiwotarotavuz/personalised_50th_birthday_memory_book.pdf
    • https://uploads.strikinglycdn.com/files/dfa67b3b-ab72-4fcf-bbbc-8e7f03de6341/52824264683.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4fb.bin
c82af78a4b4b1b429a90c714497c31d2c202faa566cfc0cccf712c97081a70b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FB 5456 bytes
font_01_sfnt_off0000f7aa.bin
62327bc5e01d939348eb4d8939a7ece63cd0806a6ef04ade4153fb5277b0876e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AA 11100 bytes
font_02_sfnt_off00011da4.bin
c7c872bbca0a2c771a55c8a5819c888f5990f79fe73d620917874b2988c0267c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA4 18028 bytes

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