Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2ce5637f088541…

MALICIOUS

PDF

76.8 KB Created: 2021-04-02 00:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85c13b93deb7c4a1ab4aaaf062225e5a SHA-1: 902071d18ae346e8a9ea172f24eaf915c32076e2 SHA-256: de2ce5637f088541b216f3cac0fc331a3554e59033df194b4096b5b0765eb617
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though heavily obfuscated, contains keywords related to 'chick fil a military training video', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://zajinet.ru/aws?utm_term=chick+fil+a+military+training+video
    • http://vabetovopux.66ghz.com/muslim_baby_names_with_meaning_in_tamil.pdf
    • https://cdn-cms.f-static.net/uploads/4401559/normal_60258eb745d38.pdf
    • http://roflan.site/11522918277dkzrk.pdf
    • https://cdn-cms.f-static.net/uploads/4495694/normal_601d7a2762f00.pdf
    • https://cdn-cms.f-static.net/uploads/4379612/normal_601cff175bf6a.pdf
    • http://vereffka.xyz/69277215622i0nbp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/39c369e4-be08-4e45-866a-bee525ac5a1f/17510430626.pdf
    • https://uploads.strikinglycdn.com/files/01811d4c-60fa-4661-9d99-2fd94ab56f4f/mekorugu.pdf
    • https://uploads.strikinglycdn.com/files/de40831d-6b10-4949-b358-7223ad99f361/recaro_performance_sport_car_seat.pdf
    • https://uploads.strikinglycdn.com/files/3ef00a99-2cfd-47dd-895c-e337f826d511/wupikoj.pdf
    • http://jukikusikodopom.epizy.com/basalioma_journal.pdf
    • https://uploads.strikinglycdn.com/files/c18a050d-9818-48ff-979b-32c10a62151e/26006217022.pdf
    • https://uploads.strikinglycdn.com/files/ceb42c82-344c-4b61-861f-1581d3e62033/custodian_of_records_declaration_california_form.pdf
    • https://uploads.strikinglycdn.com/files/64afadac-c97d-4665-9f2a-8fa96afe6420/zukanogemiw.pdf
    • https://uploads.strikinglycdn.com/files/9134cae6-e778-41b8-8193-8b490238b718/msi_n1996_motherboard_ram_type.pdf
    • http://nuduguzafasu.rf.gd/sugedalelazaboruzatadem.pdf
    • https://uploads.strikinglycdn.com/files/f3412989-9c59-430a-804e-8d21efe04461/kitab_ruqyah_syariah.pdf
    • http://dijorud.epizy.com/normal_heart_rate_chart.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_off0000f025.bin
c11634028a7dd20bab2422c94dc89b2d5747ce0873fc6fbe196626bbb2a8c009
pdf-font-stream PDF embedded font (sfnt) at offset 0xF025 5388 bytes
font_01_sfnt_off0001025b.bin
6483643cbd504889ad9246d1c0757c7de517af780d759ba87a117e53c8909cb2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1025B 10636 bytes