Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da6b9f8d7b27248…

MALICIOUS

PDF

81.4 KB Created: 2020-11-26 16:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0239ddc7b396ae4ceeee57b466621ef9 SHA-1: 2709da84ce2dbae6020c3fc8ba721458b095e47f SHA-256: 6da6b9f8d7b2724840fb5d483b872b3f558a8d74d319edaae6dcef4de93ff225
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying them as pointing to known malicious redirectors and a link farm. The document body, though heavily obfuscated, contains text related to watching movies online, which serves as a lure. The presence of these links strongly suggests an attempt to redirect the user to malicious sites for phishing or malware delivery.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/strik?utm_term=watch+j+edgar+full+movie+online+free In PDF document text
    • https://mejefarekobuk.weebly.com/uploads/1/3/4/3/134338461/jobejixot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414334/normal_5f95c1a8aca1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381759/normal_5fb7f84443c18.pdfIn PDF document text
    • https://gosopitodemeku.weebly.com/uploads/1/3/4/8/134874694/dekuzalorap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5f8bb4ab6a1b6.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/1d44b872.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/1ada3633-3ea3-4e81-b6b5-44b982f8e63c/68052620283.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/rofibuzuvalevagovasagulin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f8012d-3b1c-4b90-960f-2331007f26f0/volivemodafuderinogoruguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44748d16-8489-4943-b361-b159d4711c4a/tamazapitejewekumuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7469478-aaaf-4e4d-abd6-c05750a69575/working_model_2d_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac0e4e65-d8a2-4943-a8b5-1ab74072f4a1/wixalanadatedizeluminon.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_off0001024c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024C 5404 bytes
SHA-256: 8b0832876628f1b97c06bbd56aa19f995b787897c16f8f0bd5dbed2502931265
font_01_sfnt_off0001149f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149F 10552 bytes
SHA-256: 4d2e001fbe7b5361a1490d85002765ba29c75b41177081bb7e48e129afaa4cc8

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