Malicious PDF — malware analysis report

Static analysis result for SHA-256 d169ea9ae44623c4…

MALICIOUS

PDF

93.0 KB Created: 2021-01-06 05:22:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 13cb9d22f9a32a31e946d4bc8686ce27 SHA-1: c22d3fe62f73239ac400a2ea377bdd867a285b8f SHA-256: d169ea9ae44623c494d4e542e61432723ec9e898f5e59af2ae7fe0b53677e3e2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it redirects to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, 'https://traffmen.ru/aws?utm_term=hollywood+reporter+bts+issue', is identified as a malicious redirector, suggesting the PDF's purpose is to lure users to a harmful site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://traffmen.ru/aws?utm_term=hollywood+reporter+bts+issue In PDF document text
    • https://cdn.sqhk.co/xasexuwosul/cuAyHig/duxedagamenirasaxoluke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481058/normal_5fe97f725bef9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f871e38bc418.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/tZhimha/45489016696.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488317/normal_5fcbae5146133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470841/normal_5fa8355ed4deb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379848/normal_5fa9c3c72bed6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/figidireki/flax_color_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/junuma.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/53130703403.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/68672325142.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/cheat_droid_pro_apk_free_apkhere.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B6 6588 bytes
SHA-256: b3260a8b27c40a1c9408c40b3dcfb9ec9ded560232013cbc1ca8de37ebb5a831
font_01_sfnt_off0000f1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FF 3280 bytes
SHA-256: 4d360c7e68e9b209bb12de6dccbad719781b5ca88889a3344e7d10c2e887aca4
font_02_sfnt_off0000fdd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD4 4816 bytes
SHA-256: 92a75fe4bc313de3c3967d5f884c5bd4ffdf4c139fb03ea9222687d6ab4be65b
font_03_sfnt_off00010e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E51 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_04_sfnt_off000119b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119B4 11636 bytes
SHA-256: 6666bb0faded7c4c3324335738c0fcf81adfc5328503d1a34d81e61c26c2bd19
font_05_sfnt_off0001418d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1418D 16444 bytes
SHA-256: 733203b6135f1db83272bb67bf8a4410529f5bc0ed5567715168f5446ba6daf2
font_06_sfnt_off00015790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15790 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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