PDF malware analysis — malicious · 77b0395dab534771

MALICIOUS

PDF

33.4 KB Created: 2020-10-06 12:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 532e79260c71ea107581523ed5129857 SHA-1: 3b1a04cd357768fbdad4f92ece40fc2301feae2d SHA-256: 77b0395dab534771c720c3f1a6e5bb00536731e6a39599dd9c1445ef4f766965

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the ML_NYX_PDF_MALICIOUS flag. The embedded URL, 'https://cctraff.ru/strik?keyword=2001+lexus+gs300+owners+manual', is the primary indicator of malicious activity. The document body, though heavily obfuscated, appears to contain metadata related to the lure.

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://cctraff.ru/strik?keyword=2001+lexus+gs300+owners+manual In PDF document text
- http://denaraxu.karenbalonart.studio/uploads/1/3/1/4/131437158/gigarov.pdfIn PDF document text
- http://files.endomomstrong.com/uploads/1/3/1/6/131636587/e7767f.pdfIn PDF document text
- http://files.perfumeriastore.com/uploads/1/3/1/4/131406885/7886132.pdfIn PDF document text
- http://files.samanthapagnotta.com/uploads/1/3/1/8/131871586/jesuvatidofavaw.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/481c2cb1-2ac8-4514-a688-178fcd644d26/72151751310.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/67da8a38-802b-4603-b7dd-24708af1cf91/94782051024.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fddd4567-4ab3-454a-98ae-b67f59394499/26095886781.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4749/3536/files/53273583837.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2878/3002/files/31267837828.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1888/7073/files/motion_vocabulary_worksheet.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000432c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x432C	5560 bytes
SHA-256: `1168ecde21fed37cd09852832da25488918167cec7a3fe0b51bd4fdfc1e296eb`
`font_01_sfnt_off00005618.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5618	9956 bytes
SHA-256: `a975b941d9219c3a4c7a9246237b6273c066de5ef6512a33d2163e6adb2a8507`

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