Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ed7c3c7065bcf8…

MALICIOUS

PDF

73.0 KB Created: 2021-03-19 18:01:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e43d8a3e371c5d853af621aa02b463bc SHA-1: d36fc3dfa860fd6fdd01155cda3bb86f47131b3c SHA-256: 63ed7c3c7065bcf89dbe51e2962870ea23f1faf71a0fccc41dbf179d540bf91d
216 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a primary malicious URL identified as 'https://lozipotod.ru/wix?keyword=franchise+payment+network'. The heuristic 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' indicate a high likelihood of malicious intent, likely for phishing or distributing further malware. The presence of a password-protected archive lure suggests an attempt to bypass security controls.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/wix?keyword=franchise+payment+network
    • https://cdn.sqhk.co/bitaxukezor/hiajbic/cube_dash_space_runners.pdf
    • http://sexedate69.site/pugafdgo8q.pdf
    • http://firstflirts.site/44064420031r5uc8.pdf
    • https://cdn.sqhk.co/samigimas/VnggyIu/stretches_for_flexibility_splits.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://0c2a99dd-71fd-4a0d-b96f-672cfa785c21.filesusr.com/ugd/515c54_6f9fda48d58543d4a57b7bd4c6b336f5.pdf?index=true
    • https://s3.amazonaws.com/daselex/asia_physical_map.pdf
    • https://2f2ab42d-e0b4-4bd3-aa50-2430da1ff5fc.filesusr.com/ugd/eaf48f_7ca6c788b2e74625b650b33fe3d2b097.pdf?index=true
    • https://s3.amazonaws.com/napejaxosinages/buildbox_free_trial.pdf
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_69f9c446b43c45e49e078f978844243f.pdf?index=true
    • https://s3.amazonaws.com/novifamigot/11934378709.pdf
    • https://c504e2ef-f928-4e80-b5b1-fc05046f432e.filesusr.com/ugd/247f25_8bf7c540ba4b4839aadc6aa27f9ca450.pdf?index=true
    • https://s3.amazonaws.com/jefazaxal/1029180862.pdf
    • https://c7972686-9310-4d97-8ac3-15e828887225.filesusr.com/ugd/8a419d_e748c9de4e5c4107986eba4ced04b934.pdf?index=true
    • https://737c154f-ca75-4484-807d-9d5c19d76377.filesusr.com/ugd/7e84b7_c8b5a01f234e4d63b8315d6f185783fe.pdf?index=true
    • https://s3.amazonaws.com/vasofirida/72858083316.pdf
    • https://7c3dd69e-6649-485e-b385-36acc2971cd6.filesusr.com/ugd/cf9ff1_7540537ec99449448284ad141f70e649.pdf?index=true
    • 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_off0000ded3.bin
67819ca86cad5b8f0110dd902bf4598850bf05befc96f17ff5f7e495d3e1a26d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDED3 5356 bytes
font_01_sfnt_off0000f0f6.bin
dc73ed77ba234fc8ab1603deef7cff93edc5a8bae5381d05d0d637b2723d3054		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 11616 bytes

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