Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b8858f0856dd0f…

MALICIOUS

PDF

73.5 KB Created: 2021-02-09 01:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9ab2fb7d69fe1a69376ab30f5823e822 SHA-1: 8181e5ff5be2e122601750fd32dd082f9d1dac83 SHA-256: 60b8858f0856dd0f2a71e924f45f1ba6834a280d08688ca01bc82bee26f7167c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit vulnerabilities or trick users into visiting malicious sites, aligning with a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=cycles+of+matter+worksheet+lesson+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502436/normal_5fe58a0a89b2b.pdfIn PDF document text
    • https://jotafeke.weebly.com/uploads/1/3/4/0/134096025/fiwuzeragef-tovaxoxatuvis.pdfIn PDF document text
    • http://requiredjokblog.com/55251392775wszmt.pdfIn PDF document text
    • https://vurineju.weebly.com/uploads/1/3/2/7/132741272/mogug.pdfIn PDF document text
    • http://olipaka.xyz/gafepewivoleteguk1brgc.pdfIn PDF document text
    • https://bifotuvimutojuz.weebly.com/uploads/1/3/0/9/130969437/somop_nunizujubuzizuk_fufadazafaxol_lofume.pdfIn PDF document text
    • http://kismyketio.com/45404292532wt1t9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460983/normal_5fe8296e8547d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369930/normal_6008497303c02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_601abe0227c8f.pdfIn PDF document text
    • http://50off.pro/astrology_10199pn0.pdfIn PDF document text
    • http://itanah.space/xapifavadapelatelefafvh1v.pdfIn PDF document text
    • http://uscreditcheck.info/vabalebejulapodofaludwhgf.pdfIn PDF document text
    • http://converstarget.ru/sheetz_carrolltown_pennsylvania4m31y.pdfIn PDF document text
    • http://gufutaca6.xyz/city_warszawa_cinemapp016.pdfIn PDF document text
    • https://lovevisop.weebly.com/uploads/1/3/1/4/131410094/jazexigiwuguzav_togabapelefudaz_nejal.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/dipafuxe/insulated_concrete_forms_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/nigutigulumukavuxibid.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/christmas_images_clip_art_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/batman_logo_pixel_art_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/14162198435.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_off0000de9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9A 5416 bytes
SHA-256: b9f2ba4a551d7b7c18334ebb8a20d05018c798ec3fb93b39b9a4c4f551d20ba3
font_01_sfnt_off0000f0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F0 12120 bytes
SHA-256: 5b9f8ab5ddea98c19e953de88113464664de8fa9ff58be417162ee0fddcc8edf

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