Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe973b7a2bc08e37…

MALICIOUS

PDF

121.9 KB Created: 2021-04-07 18:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da514f28937082e3c86a6ff9ad2ce8b9 SHA-1: b43799b79d9279308ef8dd3a040f2ebc7130d314 SHA-256: fe973b7a2bc08e37e2fa79c8eafcb50bdfd5703a5a0868a327ce5811d5fd0fbd
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'ponafet.ru' suggests the document is designed to redirect users to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt, likely leveraging social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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://ponafet.ru/wix?keyword=x+com+ufo+defense+strategy+guide
    • https://cdn.sqhk.co/wozejodes/mihDbjg/cute_dog_images_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5fd987c86f002.pdf
    • http://xifadezuzurap.medianewsonline.com/medical_lab_technician_interview_questions_and_answers.pdf
    • https://cdn.sqhk.co/savageven/vjg7ifw/mint_lemonade_recipe_my_cafe.pdf
    • https://cdn.sqhk.co/nudadubuju/dDheugj/coin_dozer_casino_apk_mod.pdf
    • https://static.s123-cdn-static.com/uploads/4387813/normal_6008b463dd110.pdf
    • https://cdn.sqhk.co/jogepirar/hLQgfi9/48809032504.pdf
    • https://cdn-cms.f-static.net/uploads/4424349/normal_6059c7542039d.pdf
    • http://ximasoj.22web.org/45696808156.pdf
    • https://static.s123-cdn-static.com/uploads/4425737/normal_5fe54ff210e19.pdf
    • http://urro-hu.com/calories_in_jersey_mikes_club_sub93hh2.pdf
    • http://lipexifinidoda.scienceontheweb.net/nogudalamutuvasowozasaba.pdf
    • http://micrometer25bill.site/wofaganepasumemegujinufcd76n.pdf
    • https://cdn.sqhk.co/duxadikoti/J6ie3ou/kurifamefun.pdf
    • https://static.s123-cdn-static.com/uploads/4445534/normal_5ff94494f2889.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • http://ideal-it.fun/kimidawemamijiko2e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jedobufudajewu/femakinemi.pdf
    • http://tameladizikep.atwebpages.com/67498050001.pdf
    • http://xebizeluzifavi.rf.gd/nadinesa.pdf
    • http://pixagese.rf.gd/maboravugijurajerilof.pdf
    • https://s3.amazonaws.com/xenavuxa/w_b_c_full_form.pdf
    • http://kikamid.epizy.com/36857015773.pdf
    • https://s3.amazonaws.com/zolerazowubow/bollywood_old_movies_300mb.pdf
    • https://s3.amazonaws.com/tufujifinobiro/que_es_fe_segun_la_biblia_catolica.pdf
    • http://muvamubas.atwebpages.com/bise_lahore_matric_result_2020_download.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000170f3.bin
562741f1f55beb1b2219f9a9370f87636f0b52fa319d8be8fa2189ad3ddf42ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x170F3 7528 bytes
font_01_sfnt_off00018a72.bin
b98a545177fafdd858ddfe479951d59f5d15967255bc333a1610d58e5196f10e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A72 5272 bytes
font_02_sfnt_off00019c3f.bin
726d50e61af773a287e9bdb7554a177d4acdb8a605c15d3353c140aac34bc5ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19C3F 14836 bytes
font_03_sfnt_off0001ca8c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA8C 4324 bytes

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