PDF malware analysis — malicious · c0bd10e1577264e1

MALICIOUS

PDF

63.7 KB Created: 2020-11-13 10:14:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 8267aad10b56cba0d680f670a1387857 SHA-1: 71369cb2d3ac1c775efb03512c1d0c1c25df79b1 SHA-256: c0bd10e1577264e12d6fd9f4920e8be2c64e8309aa98cf452ea1471df8ad00d2

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URL, https://trafftec.ru/123?utm_term=babies+r+us+manual+breast+pump, which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure related to a product search, reinforcing the phishing pretext.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
External URI info PDF_URI

PDF contains an external URL action
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://trafftec.ru/123?utm_term=babies+r+us+manual+breast+pump PDF link annotation
- https://cdn-cms.f-static.net/uploads/4374704/normal_5f8b3435c6773.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368240/normal_5f8aaf3a81da7.pdfIn PDF document text
- https://kugodago.weebly.com/uploads/1/3/4/4/134491336/7e7a39.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389090/normal_5f967c64e8358.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/c7e6efca-2a27-44de-a6ce-52bf23540e96/sirifijuvatade.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1a81e612-a81b-4e77-8a01-737befb62369/sijelikowojejulujog.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5176a6b3-1f6f-46da-a398-f455f0c3c314/narejubuk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aa006fad-2ffb-4718-b123-97b420375b87/cse_100_ucsd_spring_2017.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ac05654c-77b0-41fd-96d8-86e01e25e716/rumofanoxogani.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f1eddd98-e2f2-44bb-a14a-695b1a6d609c/hentai_gallery_manga.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_off0000c05d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC05D	5152 bytes
SHA-256: `d5493f72c1c7240dcc9eb18e40bfc22ae840eb7c0be469f0de5df99766c903dd`
`font_01_sfnt_off0000d1c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD1C5	9592 bytes
SHA-256: `2bcc45b793a2964ff988b49d7f9de47c863c9d10fe0d4530f9b4ad7f9335d719`

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