Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f42e5c4eaeac0b…

MALICIOUS

PDF

72.6 KB Created: 2021-02-13 03:29:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 016b1137aa8844621d49f83dd6c4a650 SHA-1: cab214604da3a52a1fbced6b4c48bcf781ff6363 SHA-256: f0f42e5c4eaeac0bd8a7a010e8319c470b7c44c8cde70411a2d220b1b77dc336
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, potentially for credential harvesting or further payload 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://seumenha.ru/123?utm_term=verizon+international+calling+rates+to+philippines PDF link annotation
    • http://seamanygau.best/wolfteam_programsz_nakit_hilesivg9on.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472775/normal_60015f0d6271f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417807/normal_60175d5edbeae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477138/normal_6010f460bb6cd.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/ijghjjQ/74984483235.pdfIn PDF document text
    • https://cdn.sqhk.co/bazopaxepifu/UQmYOij/derukijarufukibijow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458833/normal_5fc7591632037.pdfIn PDF document text
    • https://cdn.sqhk.co/maxegugej/0Je7ibT/94450031959.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366660/normal_5ff69c5c7f9df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_6009cac3e9ca3.pdfIn PDF document text
    • https://cdn.sqhk.co/kubarevopew/Vjeghie/26580288683.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/eoKhccn/novetovixedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fd189056f0d4.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/j5Jhhjj/dazenedisafafusu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495531/normal_5ffad763506fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455916/normal_60060e519204c.pdfIn PDF document text
    • http://uablog.site/ludovico_einaudi_intouchablesxijv8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koriwiginajefet.epizy.com/wamsutta_cotton_polyester_sheets.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_off0000df3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3C 5208 bytes
SHA-256: 82b154cd9bdd400a05a123834e171c7ee733ca82f90d402ca77fa5099adb9b38
font_01_sfnt_off0000f0f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F9 10548 bytes
SHA-256: 3ce61f83101cea002cdf6afde542f160b62dd5c3fb5fbd33d554f91b1ba6785c

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