Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ebe60236661bfb3…

MALICIOUS

PDF

434.1 KB Created: 2021-03-22 05:27:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572f4f074532071a9db0f10d2c93cb37 SHA-1: e978c681224a1aa226d06c4e3772c0596aa2a0ff SHA-256: 6ebe60236661bfb31b194688193bbb89d55a71049d778e6cb3a7f5a20c57065c
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is a PDF document that contains an embedded URL and is flagged by multiple heuristics as malicious, including an advance-fee scam lure and a ML classifier. The embedded URL points to a domain that is likely used to host malicious content or redirect the user to a phishing page. The ClamAV detection further confirms its malicious nature, identifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9353

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://golowaki.ru/award?keyword=alzheimer+s+association+10+warning+signs+pdf
    • https://cdn-cms.f-static.net/uploads/4387919/normal_5fd2dfa16085b.pdf
    • https://static.s123-cdn-static.com/uploads/4389355/normal_5ffe0e6a6cd87.pdf
    • https://static.s123-cdn-static.com/uploads/4371812/normal_5ffa42e3e753d.pdf
    • https://cdn-cms.f-static.net/uploads/4402247/normal_6019799f55238.pdf
    • https://static.s123-cdn-static.com/uploads/4365540/normal_5fe2d33a5836c.pdf
    • https://cdn-cms.f-static.net/uploads/4387233/normal_6053223a2123f.pdf
    • https://static.s123-cdn-static.com/uploads/4494146/normal_600761d3dfbb5.pdf
    • https://cdn-cms.f-static.net/uploads/4491169/normal_6023b2015b983.pdf
    • https://cdn-cms.f-static.net/uploads/4391303/normal_604e92b0c9c40.pdf
    • http://jujovobima.getenjoyment.net/dovutines.pdf
    • http://makebugobiwuka.mypressonline.com/xavezovufobeja.pdf
    • https://static.s123-cdn-static.com/uploads/4465257/normal_5fe0fa8813644.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/beaadd95-678e-47da-8830-69f5227e9b10/the_essential_vegetarian_keto_cookbook_reviews.pdf
    • https://uploads.strikinglycdn.com/files/61faeb2f-edc8-4305-ace5-e6e76badaf33/rekoraradisarafuk.pdf
    • https://uploads.strikinglycdn.com/files/7df26c7f-ed6b-47a5-823f-c07349c10fa1/sixidugetunuj.pdf
    • http://xewaditina.epizy.com/rutaxasiwevinokoz.pdf
    • http://kuxiguzemafuj.rf.gd/how_to_repair_home_air_purifier.pdf
    • https://uploads.strikinglycdn.com/files/3052f93b-99d1-4585-b31c-9b04a496dfdb/rosary_prayer_guide.pdf
    • http://lazevemu.epizy.com/8082154817.pdf
    • https://uploads.strikinglycdn.com/files/351de1b7-0303-4003-b5f4-8a879441cd01/which_is_better_coalesce_or_nvl.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000661aa.bin
26a4fbb94896ef87521f2c8bd2f6f9f6fdd64e50ebd4cc077feb67009b2438f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661AA 5892 bytes
font_01_sfnt_off000675ab.bin
25eb340cb60203dc0d727a6480a00f5e4dff4648fdbb4bb7352f9a7139856ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675AB 14108 bytes
font_02_sfnt_off0006a2f4.bin
99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F4 16060 bytes

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