Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61435cab11ffdbf…

MALICIOUS

PDF

77.0 KB Created: 2021-02-28 07:49:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 21f60c12391e7922326488b3aa77c540 SHA-1: 88f46767c1c6cd7d7b8fc11095f632135cf84dba SHA-256: c61435cab11ffdbfc79d9928ae5a78e99052dd9671b46d9ea971089d06ddedc8
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://dugedepap.ru/123?utm_term=diccionario+franc%25C3%25A9s-espa%25C3%25B1ol+larousse+pocket PDF link annotation
    • http://front-glass.space/139056883784j7y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389352/normal_6008e85687aa0.pdfIn PDF document text
    • https://cdn.sqhk.co/zijigemeworu/jN3i2dM/bike_race_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484835/normal_602962ed5630e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459796/normal_5fcbf2b4ccdd1.pdfIn PDF document text
    • http://lifegirls.site/55088667045t6gxb.pdfIn PDF document text
    • http://firstdoctor.xyz/mallanna_oggu_katha_video_songstff72.pdfIn PDF document text
    • http://mivetys.xyz/17072575247q8mhs.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/5IihheY/41074491942.pdfIn PDF document text
    • https://cdn.sqhk.co/nurijodefa/1gjiagd/25032296588.pdfIn PDF document text
    • http://iblack.space/marques_de_sade_biografia_resumida2ma68.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://ralivapoked.epizy.com/tevipowilelegugav.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/libros_de_sueos_significados.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/palevipulidodom.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/21056361812.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/android_emulator_for_linux_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/vivowaselodunonewapimaja.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_off0000dd0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0E 5340 bytes
SHA-256: 129226ac027c48a1e0d51e515ac6cc93f053fe1b37dfd0917b88481768496db4
font_01_sfnt_off0000eec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC6 12288 bytes
SHA-256: c706efa5784049376098c5834a64be8c475773647f5cb62e4c38ebe3c7ba6c9c
font_02_sfnt_off00011681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11681 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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