PDF malware analysis — malicious · 70cb6440f38a993c

MALICIOUS

PDF

72.4 KB Created: 2021-01-08 18:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: fe69c1a22247bde2d0a95882b579f00b SHA-1: bfc4df2c3de23d18094f7b2cd6695cfdd70d0f66 SHA-256: 70cb6440f38a993c31a033b178889c8b8c3a78c8c6c67922a8bf7e9fcf47470f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/wb?keyword=demigod%20names%20male'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site, likely for phishing or to download further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 4

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.
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://gettraff.ru/wb?keyword=demigod%20names%20male In PDF document text
- https://cdn-cms.f-static.net/uploads/4367625/normal_5f87e12c9e398.pdfIn PDF document text
- https://cdn.sqhk.co/wavefekus/hdBeX24/best_albums_of_2020_so_far_nme.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4466413/normal_5fce32eee17dd.pdfIn PDF document text
- https://cdn.sqhk.co/bivotiboma/PsjYgd4/dunixusojaguru.pdfIn PDF document text
- https://cdn.sqhk.co/jizuxadif/wkcPLjb/78545700216.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448991/normal_5faf6c3eac399.pdfIn PDF document text
- https://cdn.sqhk.co/vexedobasof/IZQjfgh/nujilabimutire.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kudowo/vacutainer_transfer_device.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0bdfaeab-290f-4cd9-86ec-ce78ec25f45b/vendor_management_interview_questions.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_off0000e055.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE055	5048 bytes
SHA-256: `f1912fc307efffa978387a2fabeb3bd280771977ae7c65d580a6b54baa213932`
`font_01_sfnt_off0000f174.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF174	10592 bytes
SHA-256: `ddb4f4017bbb4a32d74156ebd76a8e268dc8aadc1fef771abc290ff8b9da1594`

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