Malicious PDF — malware analysis report

Static analysis result for SHA-256 f101f2b481bbd6b8…

MALICIOUS

PDF

81.1 KB Created: 2021-04-01 07:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2b035f17dafd81fe5b3d8ef739d24ab1 SHA-1: 75003f78bd4d041474ddeb4f177098bdb61563a7 SHA-256: f101f2b481bbd6b84b66cee40e8efea364734e47cb4528a490fb1365a260bc9e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://bologen.ru/strik?utm_term=international+business+definition+nature+and+scope PDF link annotation
    • https://cdn.sqhk.co/dopuwene/dCih3jb/85404375456.pdfIn PDF document text
    • https://cdn.sqhk.co/gorisaburo/hjgdBje/83574528580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453885/normal_60300a8aefa6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388272/normal_605d6afbc449c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_604dd77fe609d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409255/normal_5ffb134a0442e.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/djeghpR/candy_crush_saga_online_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495999/normal_6052af831df38.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/gfHiiii/android_device_care_storage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474759/normal_601f92faacaaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464522/normal_5ff5b39323531.pdfIn PDF document text
    • https://cdn.sqhk.co/kavuzoda/hhfhbji/88759100236.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/271ec81d-eea9-4263-8037-59071ef982f0/90201368374.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/78496899686.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/suzujelurol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40787f69-43c9-4a2a-b11f-c9049d3ade49/harry_potter_book_6_recap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f5c694-04d2-422d-a580-4247c9f4f9b3/dr_seuss_sleep_book_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38383fa9-7782-4f99-93b3-2c2af2d9846d/zaguwolujilojusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d34272-4820-4e69-bb0e-2ca3cddf2865/bose_wave_radio_cd_model_awrc_1g_remote.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_off0000fe05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE05 5224 bytes
SHA-256: 70738cb356a4d6e3ee0611128110c82f496f169c97d7ad4d02a223f08f51f128
font_01_sfnt_off00010fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCF 11544 bytes
SHA-256: f42365bb105a232351cdddbf3fbf5e07a3c7c7dfc48a8c9ec681bc77819530da

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