Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd3f678b2f2035c…

MALICIOUS

PDF

51.9 KB Created: 2020-10-31 20:58:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b0e001154281cd5260898e6ae156a041 SHA-1: 33753f105653fe472c5748ddb71d2b8c5bcdd464 SHA-256: 6fd3f678b2f2035c2a51c65f23a11271f659ef6dc9b53e63b5633cfdfdfa22c8
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to 'ggtraff.ru', identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick users into visiting a malicious site, likely for further payload delivery or phishing. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/strik?keyword=world+hd+movies+free+online+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f87c3495b27a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381081/normal_5f8dc70a20a6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f879e306c1db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405437/normal_5f9565f478f7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_5f8a15cc7c0b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f8e3ffd8b59d.pdfIn PDF document text
    • https://xazaguzomolak.weebly.com/uploads/1/3/4/3/134375957/xutoxixewanuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5f8efa9a31dd4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/nutcracker_march_easy_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/95665597734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4204/3561/files/rakoguwodibarivitavuku.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/bucket_elevator_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5882/1803/files/discussion_method_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1194/0767/files/tuwusemul.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_off00008ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD5 5416 bytes
SHA-256: 6ff8d34e54f809fde93df6955d32e0de6d7369d533eef67535bfee0c1a19aac4
font_01_sfnt_off00009d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D25 11076 bytes
SHA-256: c5836d972c7adcb09e73bfb586ecc1faea709a6b486fdfa9fb202732745010ad