Malicious PDF — malware analysis report

Static analysis result for SHA-256 a597c3bdd5162016…

MALICIOUS

PDF

76.3 KB Created: 2021-03-14 01:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c1a9fa75faf4532c3f37417696562f0 SHA-1: e418d641e0b33f72a729407fa56010b9b4645d9a SHA-256: a597c3bdd5162016158cb554c21a7bef9fece5b397f3bff6c358db4767a0ac5a
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of a large number of external links, including those pointing to potentially malicious domains, suggests an attempt to manipulate search engine results or redirect users to harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9264

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/award?keyword=cours+d+algorithme+et+programmation+pdf
    • http://tifusavegapawuf.mygamesonline.org/what_is_management_and_leadership_theories.pdf
    • https://cdn.sqhk.co/fegojujor/jjEiand/95546215826.pdf
    • https://cdn.sqhk.co/livixugakuf/fTjdXih/glorious_eleven_football_manager_hack.pdf
    • https://cdn.sqhk.co/nobixapo/2Die5gJ/52853126630.pdf
    • http://fudazozotakaxal.mywebcommunity.org/segawenuvedaluvewapukepiz.pdf
    • https://cdn.sqhk.co/tufuboloruj/ajceNlF/el_pase_elite_de_noviembre_2020.pdf
    • http://8gusevshop.website/caritas_de_emociones_para_dibujar_facilesol0a5.pdf
    • https://cdn.sqhk.co/baxoladipezu/jdbEw0P/serig.pdf
    • http://ferobuxanax.iblogger.org/fairway_solitaire_free_android.pdf
    • http://bimoriz.getenjoyment.net/15500998689.pdf
    • http://fabermanufacture.ru/maytag_front_loader_washer_drain_pump9yhtq.pdf
    • http://vereffka.xyz/misusudupivagaxij8qpkc.pdf
    • http://girlita.space/el_inversor_inteligente_libro_completo_gratis2o1k9.pdf
    • http://scm03.ru/buboximibaxumu9bpm0.pdf
    • http://sepoxudozixo.sportsontheweb.net/gajomitoranufamiki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c1bbde11-5cda-4f7c-8b74-b2fe90b484f5.filesusr.com/ugd/1c8c6c_dee489bdcb35492e8c79279b271654d3.pdf?index=true
    • http://tezipibuboxigo.epizy.com/tobujobalew.pdf
    • http://sirevonigira.epizy.com/whirlpool_ultimate_care_ii_washer_drain_pump.pdf
    • http://senovavokugured.rf.gd/rezaruvumomixukibigesen.pdf
    • https://9ef77391-fdd1-48d8-ba15-364b07375333.filesusr.com/ugd/ebefdf_75b85a17761745d092088d8e0db47d80.pdf?index=true
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_967cea24e71b4cefa1f00674be5ab8d5.pdf?index=true
    • https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_fc8a70ea3ae740c2849f3cbe3fefc2cf.pdf?index=true
    • http://domirewuzi.epizy.com/cdc_pneumonia_vaccine_schedule.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f645.bin
ef392e01a069671f1d8b3075f04df7e5e9f9aace3028c335c9bf807c7352b429		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF645 5360 bytes
font_01_sfnt_off0001084f.bin
cbb48688040ce4183d10482dc619ab1b5bb7fec4612a57f766b0542c694d9967		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1084F 12280 bytes

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