Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d51ebc6f0593404…

MALICIOUS

PDF

69.1 KB Created: 2020-12-02 00:17:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21ed36e505d0b2d290e273b5659364c0 SHA-1: 79aee07df1f194325687c724214ff1db3a426321 SHA-256: 5d51ebc6f0593404ac5a561f759aba4092aa7e4c036055b4d4f1c4ee3b5d0eaa
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URL that directs users to a site offering 'video er free for pc filehippo', suggesting a phishing or malware distribution lure. No scripts were extracted, but the PDF structure and embedded URI indicate a social engineering attempt to redirect users to a malicious domain.

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://traffine.ru/aws?utm_term=video+er+free++for+pc+filehippo
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/8978013.pdf
    • https://rogujodur.weebly.com/uploads/1/3/4/8/134899240/fagigamerujexozup.pdf
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/7611582.pdf
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/c7a309b86f.pdf
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/354df.pdf
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/tigawagil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2664e6d49a06bb5aec4b/1606297189581/98801735473.pdf
    • https://s3.amazonaws.com/zobuwubedak/44295994339.pdf
    • https://static1.squarespace.com/static/5fc0e155104edf1d7780ac3e/t/5fc24d493c6ccf69f3a951f9/1606569291579/moxodogogumofaxavexi.pdf
    • https://static1.squarespace.com/static/5fbffbf92e34347c703edab4/t/5fc1337b3485235c86f24456/1606497148792/geredag.pdf
    • https://s3.amazonaws.com/mukutud/protection_against_domestic_violence_act_2015.pdf
    • https://s3.amazonaws.com/fuwawibu/25092070586.pdf
    • https://s3.amazonaws.com/gelawiweza/enchantment_creatures_mtg_rules.pdf
    • https://static1.squarespace.com/static/5fc0e925ea4a794d56451110/t/5fc1d29c3485235c8609d092/1606537885688/niu_convocation_center_calendar.pdf
    • https://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fc3b391fa04221c719109bf/1606661010512/ellen_hopkins.pdf
    • https://static1.squarespace.com/static/5fc052d83dfdd95b60d21819/t/5fc118c0145a8629dcd7f250/1606490307811/vishnu_sahasranamam_ms_subbulakshmi_lyrics.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0c2273299f0c543bd0f2/1606224930759/xotatosiwanor.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3bc.bin
12379c6b5916ce7293aafc0419c455af6f255045cd419db05137969d1d42c9ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BC 4820 bytes
font_01_sfnt_off0000e41e.bin
98ee8bb32f0dd5449b3391833396a43e004e6ba09aa5d56fca9776b6b8d80e88		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE41E 10480 bytes

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