PDF malware analysis — malicious · 17386c0436151976

MALICIOUS

PDF

65.0 KB Created: 2020-11-13 02:06:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 307459486f10b47c4e52a5d9ba60ea77 SHA-1: d0c1e93a0a62b950ececcf569c4212e8a19e4535 SHA-256: 17386c04361519765b72e94236cc64f5619283cca4332e66ebcc30611a46491b

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=caterpillar+operation+and+maintenance+manual+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4459623/normal_5fa98538d39fd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366048/normal_5f8abc2c30516.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/waxapoz/39417823077.pdfIn PDF document text
- https://s3.amazonaws.com/jizubisetebof/89805805526.pdfIn PDF document text
- https://s3.amazonaws.com/dowavelaxam/71658519754.pdfIn PDF document text
- https://s3.amazonaws.com/mexesazaxasa/guideline_pneumonia_anak.pdfIn PDF document text
- https://s3.amazonaws.com/buxoparadazegu/bumewifarutipot.pdfIn PDF document text
- https://s3.amazonaws.com/tejuvonixag/75327506416.pdfIn PDF document text
- https://s3.amazonaws.com/xabalaru/logitech_dinovo_edge_keyboard_dongle.pdfIn PDF document text
- https://s3.amazonaws.com/rupatojuko/40234386796.pdfIn PDF document text
- https://s3.amazonaws.com/dudurat/91016306969.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/nuzamokikiluzowapono.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_off0000c486.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC486	5028 bytes
SHA-256: `b9a34067cad7e6d4a2b4699d06e658ec55f5ab426800161d5f4c8601b8af6b4d`
`font_01_sfnt_off0000d588.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD588	9872 bytes
SHA-256: `445659a7ae7255d01c29bf86fea032eb893dd58b88cc15715caf22ec7ccb378b`

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