Malicious PDF — malware analysis report

Static analysis result for SHA-256 724dc1ccfd00a2d7…

MALICIOUS

PDF

74.4 KB Created: 2020-12-17 07:51:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e1bae219e04a0b72e20de10084f71f42 SHA-1: 73daaadf4a5edb666c32e5d79031070f6f6573a4 SHA-256: 724dc1ccfd00a2d71f8ee1be2572bd41c89fd8f16cfb7468b4041caedc656702
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely as part of a social engineering attack.

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://trafficel.ru/strik?utm_term=southbridge+high+school+yearbooks PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481985/normal_5fadcb4914ae7.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
    • https://s3.amazonaws.com/vovopafubipu/80466818567.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1961a60f2895dc1ecb911/t/5fcd6d68662d5e24e0b6a804/1607298410152/pixel_plants_vs_zombies_2_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/295076af-4c46-4c55-a17a-b9d52edc8db7/35002246660.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/futoxew.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/guidebook_to_thailand_islands.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/valentine_s_day_2010_movie.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28782084698658e68a2ec/t/5fc964e0e31f6d5f0946d1fe/1607034083766/hand_auger_drill_adapter.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00874a5bc066edfa0f7a0/t/5fce20e97ae85b53b2ba7942/1607344361498/crossroads_village_apartments_liberty_mo.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/votibiso.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/astrologer_s_day_story.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_off0000d757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD757 5384 bytes
SHA-256: 9c34b307a5966e565ae6d4d97a3c9d03b79f8a489c1068e527a0e6123033680a
font_01_sfnt_off0000e9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C0 10856 bytes
SHA-256: 556deac6f7c7c36e6930e288905a2dac7bbdd720dffa7847a4932eb725298aa4
font_02_sfnt_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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