Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d32dd2a9e172f4b…

MALICIOUS

PDF

70.8 KB Created: 2021-02-13 03:24:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: aed2f3ea1a1887592a339f9035d46950 SHA-1: c9e561cc3c801120cd19b7e6f9b12a38e9ffe531 SHA-256: 5d32dd2a9e172f4b7a75ba71761f215c2fba26c9f11a698d6c5216086b5cf537
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that points to a domain associated with malicious activity, likely serving as a lure to download a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to educational content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=area+of+a+parallelogram+worksheet PDF link annotation
    • http://motirepefasake.iblogger.org/8719349192.pdfIn PDF document text
    • http://besemafobekilir.22web.org/sukeva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_600ffd26aa5e9.pdfIn PDF document text
    • http://rigares.iblogger.org/botim_apk_for_android_4._1._2.pdfIn PDF document text
    • http://nosukave.22web.org/28913088376.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5fc7a5e8af304.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473410/normal_5ff97b27ea1f5.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/hhdhdjc/benji_bananas_hack_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/hjjY8jd/buffalo_drumsticks_in_air_fryer.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/guVWZLA/football_player_career_simulator.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/liagjD2/freehold_reversionary_interest_definition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bofake/59876454700.pdfIn PDF document text
    • http://ruwapebubori.epizy.com/asus_zenfone_max_pro_m1_update.pdfIn PDF document text
    • http://refewededuxita.epizy.com/80068292684.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/the_good_witch_season_4_episode_guide.pdfIn PDF document text
    • http://jobifizokugo.rf.gd/9697083440.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/uncrossed_answers_wash_8.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/53312912546.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/57162854100.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/festivals_around_the_world_worksheets_for_beginners.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B8 5460 bytes
SHA-256: 0403bc9d65ec0c72c551b4d1d7aecc8401e9fd9df5bfb8aec5e1b08ebc863a43
font_01_sfnt_off0000eb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB38 10056 bytes
SHA-256: 848a9803bdccd86ca323bf18aeb8956e1994c915465daa729a65a2cfe181bf64

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