Malicious PDF — malware analysis report

Static analysis result for SHA-256 274ff671ded838e2…

MALICIOUS

PDF

77.1 KB Created: 2021-04-11 23:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9fa225a7891980d8cc289d4126a83a6 SHA-1: 70ac946df88572e356fb7727b3fe69d8805aa6d9 SHA-256: 274ff671ded838e24dac4cefda8497b311a2620f46132f055f8b8ba28b697b3b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to printer connectivity issues, suggesting a phishing or social engineering attack.

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://kuzutuzo.ru/strik?utm_term=why+is+my+samsung+printer+not+connecting+to+wifi
    • https://static.s123-cdn-static.com/uploads/4413975/normal_5fdf2d506ec98.pdf
    • https://static.s123-cdn-static.com/uploads/4463824/normal_5fee1d5456338.pdf
    • https://cdn-cms.f-static.net/uploads/4452376/normal_603d0b80ae756.pdf
    • http://xelibirujegid.mywebcommunity.org/sozaz.pdf
    • https://cdn-cms.f-static.net/uploads/4459059/normal_60353b509c4d3.pdf
    • https://cdn-cms.f-static.net/uploads/4444098/normal_601484dbeec09.pdf
    • https://static.s123-cdn-static.com/uploads/4378152/normal_5ff71af75fc7d.pdf
    • https://cdn-cms.f-static.net/uploads/4485015/normal_601627cd08b70.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_38eb372868e8416a979fbbfce11a5cf2.pdf?index=true
    • https://s3.amazonaws.com/bolovopizonuki/31961008692.pdf
    • https://s3.amazonaws.com/lekezaru/honda_performance_parts_south_africa.pdf
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_37e379d46bd74706860c68bd9736b7cb.pdf?index=true
    • https://b2bd4247-5771-4f9a-9f3f-b46500bff287.filesusr.com/ugd/f41bfe_e2351d38d82f48f1acb9b0277929dd48.pdf?index=true
    • https://56f9ebfc-1b58-4ccd-90b9-24793863e956.filesusr.com/ugd/0f3536_cfe878abf653445aa8d11402bf5c9fd0.pdf?index=true
    • http://sekuwomexapa.myartsonline.com/44385395168.pdf
    • https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_a66971481b84469c95ff0f10ce9718ae.pdf?index=true
    • http://wiloradakuno.onlinewebshop.net/coupling_capacitor_voltage_transformer.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_off0000eef1.bin
9fea799a680b2de09bb08153116d6b184a05dde72fb54952465ae3184aa8c287
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF1 5604 bytes
font_01_sfnt_off000101ff.bin
1496d950b4580b1de9fcaa78a1c92ae1ec2515579ba6ee34cd55ee7434b26751
pdf-font-stream PDF embedded font (sfnt) at offset 0x101FF 10704 bytes