Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1c7eab97f58bd3…

MALICIOUS

PDF

167.3 KB Created: 2021-03-19 05:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 378f5b3459632eed64aa93d45dfaa720 SHA-1: 68790466469d4d325618183dd755b4b0ff8e1431 SHA-256: ac1c7eab97f58bd3efbd90458217c5eed137bd33588e9ea5eac6cd332f49866c
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf. The primary malicious indicator is the embedded URL pointing to a suspicious domain, likely intended to lead the user to a phishing or malware download page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://soxebez.ru/wix?keyword=word+whizzle+rooster+answers+divisive+verbs
    • https://cdn-cms.f-static.net/uploads/4423714/normal_602fa132cf7a0.pdf
    • http://nosilekexiwot.mywebcommunity.org/68832476574.pdf
    • http://mojadejazisapa.sportsontheweb.net/kindle_paperwhite_users_guide_17th_edition.pdf
    • http://uorott.com/bose_companion_3_series_ii_wattswwdly.pdf
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/452506.pdf
    • https://static.s123-cdn-static.com/uploads/4376611/normal_5ff9097dd9b1d.pdf
    • http://ziwusis.getenjoyment.net/dr_scholls_foot_spa_plus_manual.pdf
    • http://creditscorehelp.info/xarimn29h5.pdf
    • http://zoguponuwuxoli.medianewsonline.com/what_is_osha_10_hour_training.pdf
    • https://static.s123-cdn-static.com/uploads/4470405/normal_60087ad683e63.pdf
    • https://xetudutadoboja.weebly.com/uploads/1/3/4/3/134344850/8337237.pdf
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5fe7b4d515d21.pdf
    • http://leziwazedo.mypressonline.com/tips_for_public_speaking_and_presentation_skills.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_f584af60cdd44f63a84bbdfd62b511cf.pdf?index=true
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_916702c009f342aaa5f967a5ff9bb64d.pdf?index=true
    • https://s3.amazonaws.com/wovigebi/android_apple_watch_hack.pdf
    • https://s3.amazonaws.com/xixonu/sajivokux.pdf
    • https://s3.amazonaws.com/lixasifasi/airline_tycoon_mod_apk_android_1.pdf
    • https://s3.amazonaws.com/lorugipopuxe/polifajavugiforuwijuziza.pdf
    • https://s3.amazonaws.com/vedexajawo/deredi.pdf
    • https://a2214900-82f6-4ed5-a432-d5ffd14110fa.filesusr.com/ugd/306b6b_705f9e6d9d244cfd9cfd364753a3b506.pdf?index=true
    • 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_off00025827.bin
dc388b80cd3f09ddafb7478d0b221bcd12432d2fced5a22bc39a04d58e7da86a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25827 5268 bytes
font_01_sfnt_off00026a2e.bin
7dc111b8d03e853456456c46e12bbe57c99eff2cfe7474c6c23904be93e33ea0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26A2E 10636 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.