Malicious PDF — malware analysis report

Static analysis result for SHA-256 201b2dbfdac8a355…

MALICIOUS

PDF

75.0 KB Created: 2021-03-15 01:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dbb4caa89f448dfdf9137fc822073ff3 SHA-1: dcde5acde5e78c601d9d231f48ba2a9eedde0d35 SHA-256: 201b2dbfdac8a355d7425b946b59ae63c5254ea9ce0806d9db78ed4e7714568f
136 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. It uses a LOLBin command-execution lure. 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 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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/wix?keyword=american+pageant+12th+edition+online+textbook PDF link annotation
    • https://cdn.sqhk.co/tumupowe/hg3gfhh/54185522991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419433/normal_602b589256815.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418171/normal_603ff23b02b0f.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/ehfggkW/zepavelujozelep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489596/normal_5fe6287178bb9.pdfIn macro / runtime command snippet
    • https://cdn-cms.f-static.net/uploads/4413002/normal_5fdaaa1679844.pdfIn macro / runtime command snippet
    • https://cdn.sqhk.co/mikevoponage/6F9ibge/bolobopireb.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/Widiijb/ten_pin_bowling_shop_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/GiikYsI/toilet_games_3d_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/gdb4iiV/54312075850.pdfIn PDF document text
    • https://cdn.sqhk.co/kupujape/ha0FTWe/54568667043.pdfIn PDF document text
    • https://cdn.sqhk.co/fukaxaxod/g6jjgCA/beyblade_battle_games_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/jigdgcG/56184496111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_601e56e45cb09.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/ehfggkWIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/09625f07-8045-43f2-a47d-8179dccfff40/how_much_does_enterprise_charge_for_mileage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09a81f5d-7eec-4221-8a6e-17809dbb05fd/kakemazurikerebugorob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df8708a2-8fd2-497d-99db-12983939ff16/tedijalumujovamig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22a1a653-a89d-4b5c-bcae-a367c1a567e0/how_to_maintain_s_curl_texturizer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeda8b78-c8ab-4d0f-b4ec-82e0de818a65/luzanerinikabazavapunife.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA3 5756 bytes
SHA-256: 39be977bd0094e0833f2a291d9e2a15607997de318a01769851024c2ae2e832e
font_01_sfnt_off0000e011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE011 12124 bytes
SHA-256: 66b8b8f401b073256e3220c97bfa062ec9976f0e4b079f14c188f6c8d33b154c
font_02_sfnt_off00010746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10746 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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