Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f299589b9e79db…

MALICIOUS

PDF

80.1 KB Created: 2021-01-29 10:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4ca5b9b7d958df200caee89d19a9baee SHA-1: 2ff1d007392741870e28e29ecd180d98c2fdb3f3 SHA-256: 92f299589b9e79db26301a95a4d70c04c41b14ec9ea5342828dcfd833e34a913
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=walter+payton+high+school+tuition PDF link annotation
    • https://lufosafol.weebly.com/uploads/1/3/0/7/130775677/5f05febec55d.pdfIn PDF document text
    • http://qlemelest.online/home_manager_jobs_essexg6hfa.pdfIn PDF document text
    • http://airbin.top/pilutokesajopkncq.pdfIn PDF document text
    • https://kelurefuvaw.weebly.com/uploads/1/3/0/9/130969237/ad399e.pdfIn PDF document text
    • http://instapriz365.online/elaboracion_de_licor_de_dulce_de_leche7ctn5.pdfIn PDF document text
    • https://peguduzivinaw.weebly.com/uploads/1/3/1/6/131606374/124514cf4aae.pdfIn PDF document text
    • https://jepuderakemuso.weebly.com/uploads/1/3/4/6/134666912/bikinadisezotiru.pdfIn PDF document text
    • http://zanetapoxod.22web.org/expressvpn_android_app.pdfIn PDF document text
    • http://gakmancreatures.ru/goal_zero_flip_24_power_bank_reviewjkd78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467017/normal_5ffb9e2aae430.pdfIn PDF document text
    • https://waniritapi.weebly.com/uploads/1/3/0/7/130739375/fefudukosamuzux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://midekudaxigol.rf.gd/larog.pdfIn PDF document text
    • http://mafonoxerinomif.epizy.com/50249691292.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/riselevi.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/stiffened_felt_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/dinozetijivasidanimifi.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/raceroom_car_setup_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/marketing_strategy_sample_format.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE23 5192 bytes
SHA-256: 16698566d80f4c413b40eeef118a236a6da593ba10dc158053ac796febe7a8ca
font_01_sfnt_off0000ffd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD8 10844 bytes
SHA-256: ecf75a6b6371bbe5f140c73ee4cbba0c31c93a2e22e9d6063fe755be65a27f71
font_02_sfnt_off000124b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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