Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e7387f46990efe…

MALICIOUS

PDF

89.2 KB Created: 2021-03-22 16:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18e461c0869f02720c71aafbc80db5ad SHA-1: d8a63f26a49e405beb06d559059e48b5698097ba SHA-256: 16e7387f46990efe9acb8cd0531f6d393b5597d37697d967a7429607fb08f9df
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URLs, such as 'https://zajinet.ru/wix?keyword=muse+dash+apk+2020', suggest a phishing or malware distribution attempt, likely disguised as a software download lure. The document body, though heavily obfuscated, contains metadata related to the authoring application and creation date, consistent with a generated document used for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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/wix?keyword=muse+dash+apk+2020
    • http://blancer.xyz/pulavodipodemamebotu72023.pdf
    • http://pebifakonek.sportsontheweb.net/gelis.pdf
    • https://static.s123-cdn-static.com/uploads/4529780/normal_5fd04cd067da5.pdf
    • https://lepovomika.weebly.com/uploads/1/3/4/7/134701686/2192400.pdf
    • https://static.s123-cdn-static.com/uploads/4413374/normal_5feafcb02e5e2.pdf
    • https://kakifimetuwojo.weebly.com/uploads/1/3/4/3/134317364/1916c97cfbf.pdf
    • https://rowiteruna.weebly.com/uploads/1/3/4/4/134470704/9913479f99.pdf
    • https://cdn.sqhk.co/ragonujip/oPDgjp1/jirosijejaxefivo.pdf
    • https://cdn-cms.f-static.net/uploads/4471509/normal_60500eeda1f7d.pdf
    • https://static.s123-cdn-static.com/uploads/4427811/normal_5fc7e72f887ec.pdf
    • https://wobomiti.weebly.com/uploads/1/3/4/5/134501920/zuletunani_viwesu_jebagavowenol_sekejijidol.pdf
    • https://cdn.sqhk.co/rojarasam/VMwjufV/7847570231.pdf
    • http://shlifovka-pol.website/how_to_find_the_surface_area_of_a_regular_polygonaq6mk.pdf
    • https://static.s123-cdn-static.com/uploads/4365584/normal_600122649ade6.pdf
    • https://cdn.sqhk.co/reditifotep/jbjbtNq/1503088451.pdf
    • https://static.s123-cdn-static.com/uploads/4490736/normal_5fec8e102e12a.pdf
    • https://pogixovupo.weebly.com/uploads/1/3/4/6/134690118/8240542.pdf
    • http://wijofotezopadik.medianewsonline.com/gugofatekugofa.pdf
    • https://cdn.sqhk.co/pavupaken/eifjeQz/accelerometer_data_filtering_android.pdf
    • http://gitikirazidapi.medianewsonline.com/93375843054.pdf
    • https://cdn-cms.f-static.net/uploads/4368741/normal_602e043650c01.pdf
    • http://iciapp.xyz/how_to_do_a_suntrust_wire_transfer0orc8.pdf
    • http://milanomoda-italy.site/duneselesonajuropuvexesaduscg0.pdf
    • http://zhenskiizhurnal.ru/multiplying_and_dividing_fractions_problems_with_answersjter4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb6b.bin
f1279a28312f9a653cd9a79c313bc3214188b773f7cba8edee74198d11fd207d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6B 5884 bytes
font_01_sfnt_off00010fc5.bin
68d735faf50646ade7a7fd9ce7786164901acb4742de9e79565b1fad1b7fcf7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC5 5264 bytes
font_02_sfnt_off000121b6.bin
6ef63932aa4bf9b09a72e5f962818fad1c2c57de32a7bde9848047d66ed8fcac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121B6 21644 bytes

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