Malicious PDF — malware analysis report

Static analysis result for SHA-256 13b396aa987c751f…

MALICIOUS

PDF

99.0 KB Created: 2021-03-24 00:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd1707cf0ac570ab412821f5223d2b54 SHA-1: 70acdc03692cf9ec030227abbf6cd37e4e29f418 SHA-256: 13b396aa987c751f6ab6151c05e35bd4be995f40ae79b516b925c48fa4ef1005
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI pointing to a suspicious domain, coupled with heuristics indicating urgency lures, suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are typical of malware delivery or phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/strik?utm_term=what+does+the+new+cod+update+include
    • http://botomovosisivod.22web.org/how_to_add_guided_access_on_iphone.pdf
    • https://bikiwilusi.weebly.com/uploads/1/3/4/5/134512037/2f6a12dff9b5d7.pdf
    • http://pulemovidake.22web.org/south_africa_house_plans.pdf
    • https://sizuzoxoxef.weebly.com/uploads/1/3/4/8/134846633/df7f18dc9908.pdf
    • http://fakaripeti.xyz/mofafawomotxar1u.pdf
    • http://moitender.org/somexerabadibamezamakonhn5s.pdf
    • http://ogranicbio.fun/how_to_make_a_pressure_transducerypz68.pdf
    • http://rusiwosamafu.iblogger.org/25720381522.pdf
    • http://xofofumireke.mypressonline.com/25032726004.pdf
    • http://dwatches.site/28352979404sjtj7.pdf
    • http://sevagawos.getenjoyment.net/the_colour_of_magic_book_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nukilaba.myartsonline.com/portland_maine_map.pdf
    • https://uploads.strikinglycdn.com/files/20bb25ce-5fb2-4820-a2eb-1a48c2290182/98569240135.pdf
    • http://vaxalisuj.rf.gd/the_canterbury_tales_middle_english.pdf
    • https://uploads.strikinglycdn.com/files/213395d3-7829-406e-865f-00db30b99f6d/xisejufixatuwilaf.pdf
    • http://ximizadoxa.epizy.com/timebap.pdf
    • https://uploads.strikinglycdn.com/files/93436c37-99b6-4ef5-8f72-66eaf7b6f23e/figurative_language_examples_in_songs.pdf
    • http://ribigilubawedom.rf.gd/norelco_5000_blades.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_off00012d60.bin
84ea4d3f6043abf27cf62e317329638a57eed3aaefdfaf8b9121037d7c8290ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D60 5172 bytes
font_01_sfnt_off00013f11.bin
3a831df1feb908eb07782ea3003a32be08b4abd8650642b341ff305bcf7a459f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F11 11784 bytes
font_02_sfnt_off00016752.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16752 16204 bytes

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