Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2c7b9e34cf52f4…

MALICIOUS

PDF

80.7 KB Created: 2021-04-03 15:16:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 74be32984d3dcd5ba355caad2b1336d9 SHA-1: 72f5b0804bb0170a8db5a96601ba6fe24d80225b SHA-256: fe2c7b9e34cf52f472b4bf25f2a617f97ca38f606a0f086293a8f2e21cbdb500
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to domains commonly associated with malware distribution or phishing lures. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting an attempt to drive traffic to malicious sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://botokaw.ru/strik?utm_term=web+services+interview+questions+and+answers+for+experienced+pdf PDF link annotation
    • https://rirokenu.weebly.com/uploads/1/3/5/3/135349909/97ba061106.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377102/normal_5fe0f1a2e5121.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5fc6cfc695c7d.pdfIn PDF document text
    • https://wasitenatibasi.weebly.com/uploads/1/3/4/8/134890771/09cd220fc.pdfIn PDF document text
    • http://prizinsta.site/canal_du_midi_cycling_self-_guided408q5.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://lasns.fun/cell_stephen_king_book_summaryz6vmf.pdfIn PDF document text
    • http://fsfsfd.xyz/2247065358794mbi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_60434610dae22.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/castle_rock_usa_stand_by_metcsio.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488329/normal_5feb2f29423c5.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/3660f1809a4.pdfIn PDF document text
    • https://bowulujakem.weebly.com/uploads/1/3/1/0/131069806/rotitob_nakadubuve_rozomize.pdfIn PDF document text
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/zovus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sozidimimu.rf.gd/52566826303.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/59179899335.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/rt_ac66u_review.pdfIn PDF document text
    • http://wekapalipewux.epizy.com/electronics_aptitude_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/ace_screen_stream_pro_apk.pdfIn PDF document text
    • http://zodupubulorak.epizy.com/aadu_valarpu_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/66485177343.pdfIn PDF document text
    • http://bidavavaxekize.epizy.com/59021067413.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/how_to_make_custom_actionbar_in_android.pdfIn PDF document text
    • http://nuvadonopuxopu.rf.gd/3983882049.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_off0000fd3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3E 5616 bytes
SHA-256: 128e3543411b22a004a08b00ed1a699b06b2ed57e118530389206fc05abbae13
font_01_sfnt_off00011087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11087 10628 bytes
SHA-256: 1369e15414e36a4bab6f7ab37ba55f3f81ef9dab552c9ec2200cf3a39a7fcdb9

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