Malicious PDF — malware analysis report

Static analysis result for SHA-256 048df80fc691f206…

MALICIOUS

PDF

81.8 KB Created: 2021-04-01 18:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7687c1947ad6643d00c9c72067a048e2 SHA-1: 7d509d6546eaf80557abbeba911a99ef757f8ca0 SHA-256: 048df80fc691f20640a5cd39e3bf01fe39ed09f32db6f3802d37df111c49c451
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to a book review, likely intended to trick users into visiting the malicious URL. The presence of embedded URLs and the overall detection by security tools indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://vilenefex.ru/strik?utm_term=the+serpent%2527s+shadow+book+review
    • https://static.s123-cdn-static.com/uploads/4416798/normal_600516a82e332.pdf
    • https://cdn.sqhk.co/ganuniwiku/jhBe7Mw/street_fighter_super_fighters_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4384460/normal_60497287e8686.pdf
    • https://cdn-cms.f-static.net/uploads/4407316/normal_6021963e86824.pdf
    • https://cdn-cms.f-static.net/uploads/4387699/normal_602b6e5dbfe14.pdf
    • https://cdn.sqhk.co/niripakexad/dgcihaB/churrascaria_plataforma_nyc_restaurant_week.pdf
    • https://cdn.sqhk.co/galemojubemo/WheMjcQ/zezeridamemivurelav.pdf
    • http://kevotefanevodaw.iblogger.org/bathroom_accessories_list.pdf
    • https://cdn.sqhk.co/xatuxazaz/hgu7gji/45334207810.pdf
    • https://cdn.sqhk.co/xugavizira/cjcqhaj/crazy_touchdown_celebration.pdf
    • https://cdn.sqhk.co/fujavuraleko/RNhZ2YG/79686523630.pdf
    • https://cdn.sqhk.co/vasibejovej/4hciIgj/female_voice_changer_pc_app.pdf
    • https://cdn-cms.f-static.net/uploads/4454049/normal_5fd99d9d1be18.pdf
    • https://cdn.sqhk.co/natokaze/eicgcgf/3753940868.pdf
    • https://cdn.sqhk.co/begokaxawip/rgeihjh/somiba.pdf
    • https://static.s123-cdn-static.com/uploads/4367903/normal_5ff64dca41e54.pdf
    • https://cdn.sqhk.co/wadelovelo/hbpjfBl/amazon_prime_rolling_stones_shirts.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4dd9d051-00b7-4456-a228-077f36dada03/what_is_a_romantic_suspense_novel.pdf
    • http://luvomovasofigu.rf.gd/tokejikunufemufor.pdf
    • http://sewegex.epizy.com/55407836651.pdf
    • https://uploads.strikinglycdn.com/files/333cbb31-20be-45e7-8b31-a65aaca07d38/lolixenexipi.pdf
    • https://uploads.strikinglycdn.com/files/ee4b0ba3-31c3-4214-94af-40111fac2bb5/wosevebaguk.pdf
    • https://uploads.strikinglycdn.com/files/6eb91c3b-2373-474a-abda-d24256506182/gixixunasetowedusifimi.pdf
    • https://uploads.strikinglycdn.com/files/fbc30165-e2b9-4dae-b3f3-6d4acb5237a7/can_i_make_alexa_speak_spanish.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://affiliates.abebooks.com/c/99844/77798/2029?u=http%3A
    • 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_off0000eafc.bin
43f2c0fd64b52fe097d986b6eceb7cd6c29250a124f69350a1ffa082b6607b6f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFC 5352 bytes
font_01_sfnt_off0000fd40.bin
65af78e157158cae834a4983e0d074d83a75d99d7101120aaa4196df5fa6780a
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD40 10756 bytes
font_02_sfnt_off00012268.bin
ee51351c9eb8c6a9dbff1bb743467f39bbaa64eee970481c040e8f02c1ffc4b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x12268 16340 bytes