Malicious PDF — malware analysis report

Static analysis result for SHA-256 58de3900a9fed04f…

MALICIOUS

PDF

69.4 KB Created: 2020-11-25 14:49:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c59387495cf5bfbdf4892be6a00552a6 SHA-1: 5456a7bf8b2e07fe1d129f5b22c7e0049a429c9d SHA-256: 58de3900a9fed04f1a06275e007502447689640c1b9ac674de319de496a09618
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving a phishing or malware payload. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest it's designed to redirect users to a malicious site, potentially for phishing or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://trafficel.ru/strik?utm_term=ramp+agent+interview+questions+and+answers
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5fb3fedaf2b05.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tokit/unblocked_soccer_heads_champions_league.pdf
    • https://s3.amazonaws.com/vasagesorajirem/xidagi.pdf
    • https://uploads.strikinglycdn.com/files/a0783fb8-c521-4f5b-961e-9fd02550055a/44096869506.pdf
    • https://uploads.strikinglycdn.com/files/e3364593-c090-4adc-898d-7c493b975f18/planos_de_acabados.pdf
    • https://s3.amazonaws.com/legobegutulo/bluestacks_android_app_for_pc_free.pdf
    • https://uploads.strikinglycdn.com/files/95f9d95f-5750-4290-9015-26ef7de57d69/givukazezawatazubad.pdf
    • https://uploads.strikinglycdn.com/files/c371e1f6-a538-4df9-8193-18c3f254485f/whole30_shopping_list_trader_joes.pdf
    • https://s3.amazonaws.com/mafavuzenoliki/koi_karke_bahana_song.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5c5.bin
f5e885f59fb07171e3941abdf56ae5ae1aa29d883241e8d38d81a6ea65b7e018		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C5 5532 bytes
font_01_sfnt_off0000e88f.bin
6f1c03cec34626525313178f2fa62255c4dbe0204026cef66c690f8042258b93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE88F 9700 bytes

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