Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abc7f4707b18ffe…

MALICIOUS

PDF

66.0 KB Created: 2020-12-11 02:34:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ddc4dbe09f627c29c6342ce2e7584523 SHA-1: 20b87100627f5da5c77f3650d1088582a4d35873 SHA-256: 0abc7f4707b18ffef09ed0d93226072aa025e6ebc231c1d45920107fecb9f8e1
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure and an invoice-themed lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafffi.ru/strik?utm_term=skyward+access+harlem+122 PDF link annotation
    • https://valogasode.weebly.com/uploads/1/3/4/3/134320371/sogebew.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/xasotogubusagadax.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/696219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462376/normal_5fbbddb2e113a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a61077bc-2102-46a8-9931-1bdf3438c8a2/concepts_of_print_checklist.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc713abaa0dc1643a2f70df/t/5fcdda7b1e1a4d7de14cab53/1607326334226/thrift_shop_online_furniture.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/periodic_table_hd_image_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f05df9866f3fd2d48fd4/t/5fc2c3a1e6d49a06bbee0cfa/1606599585816/bevavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8d1e5e2-ece9-4cb9-aeb9-a825e4c97991/modubedukotozijiwi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59761084698658e7e32d0/t/5fcf6cfd69d6d06d5540f050/1607429373569/43730413735.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B2 5724 bytes
SHA-256: dcb8d849b5a29de6b42c7bd03f1a6679fabbfe1fd3c20310a6b1be18bd46ea43
font_01_sfnt_off0000d827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD827 10292 bytes
SHA-256: 9d8775b362e593483a761f35394637d541d103c9c435a3b4f5603ea603a65aff

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