Malicious PDF — malware analysis report

Static analysis result for SHA-256 498c1e4bf9d9c77d…

MALICIOUS

PDF

66.8 KB Created: 2020-11-29 19:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ffdab493b151439a8ced10552280cede SHA-1: acbfa9f30a5f5df75b0e985cc43402705c4119eb SHA-256: 498c1e4bf9d9c77d43ae35a7fbf2d8b05fe33a7cc72f72a917337f0e4424e0d1
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/123?utm_term=legend+of+zelda+level+6+dungeon+map PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381081/normal_5fbb4e53b4501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460233/normal_5fc2d64c7721f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_5fa96710c0fc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416939/normal_5f9bf51d92b27.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/f7ba30d7-38c5-46e8-8bda-37c9e8eb1e22/8145841976.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/46952332027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c68bf9b-9fe4-4bda-9c30-131562c3b202/41564566955.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5fd785e-3450-4248-add8-fc3b88c73582/zixofe.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/bewars_movie_songs_free_in_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29f97209-8039-4f83-ae0f-04f868936637/xosuloga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a7e9d74-5257-4fc2-84f5-d7c19cbfb853/zogusetisuwifenozuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb66f8ca-0f5c-429e-a85b-e86f3a4d289d/lazujutonegekogud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa660577-7e93-44c1-9ea0-2536c7d53832/69896450572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d9dce11-6bef-441d-9df6-36edf6d52930/bebafuwanixelapexufume.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.

FilenameKindSourceSize
font_00_sfnt_off0000c94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94B 5292 bytes
SHA-256: 9612ea9b9f658c7b61041063c2c546dfcb5dd6b132b593148184e04954356a58
font_01_sfnt_off0000db5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5D 10144 bytes
SHA-256: 6a327f7ce70df20598e3ff7c7644c657252dd6a578f1d572901659c9b2d5cb99