Malicious PDF — malware analysis report

Static analysis result for SHA-256 67316fa64c99a49c…

MALICIOUS

PDF

215.5 KB Created: 2021-03-21 01:35:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8770079b30e23717fbce27e6e0d61c11 SHA-1: 9970b956a4e2de040817bfe6885407310ee18898 SHA-256: 67316fa64c99a49c578a841a847ea1aaabdcf18cc1aeed5ed12ac43e651e5305
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 0.9984

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=hp+jobs+aguadilla+puerto+rico PDF link annotation
    • https://gafewifem.weebly.com/uploads/1/3/1/3/131379815/34f28159262601e.pdfIn PDF document text
    • https://wisatevifo.weebly.com/uploads/1/3/0/7/130775851/vapiraji-dodejadora-vafudopotewur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_601dc883a6e80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380701/normal_6041cdda3cf44.pdfIn PDF document text
    • https://lijimoxa.weebly.com/uploads/1/3/0/9/130969704/badamatumokesatasuxe.pdfIn PDF document text
    • https://fewanisip.weebly.com/uploads/1/3/2/7/132712603/pokurumowow.pdfIn PDF document text
    • https://norenepativen.weebly.com/uploads/1/3/4/3/134315866/918786284.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410953/normal_60025dd1cacb9.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/9dcc07d9-d61d-4d9c-88de-22817c7acab1/lincoln_sa_200_redface_blue_dial.pdfIn PDF document text
    • https://8533cbf3-c0d6-400c-bdf8-8ca38cf0242b.filesusr.com/ugd/135178_2641d6f82de344ff82c2ff326a8d6d63.pdf?index=trueIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_097749949c574b548f4a28321f8e0aac.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e57bc5b-2722-4c15-ba87-9e3ad136c52e/reading_comprehension_book_grade_3.pdfIn PDF document text
    • https://0b609444-e5a2-4a7e-9779-a3c6bae51a53.filesusr.com/ugd/529dbf_679ae71b2ce5463399091fc5a4100e98.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3cd281-6127-4986-8e5c-a306efbb3663/how_to_open_big_green_egg_charcoal.pdfIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_71e5be6da6ef421daa29461a50c0ea49.pdf?index=trueIn PDF document text
    • https://ed0f7819-48b4-4c0d-9119-93de03d81b9c.filesusr.com/ugd/e481ce_c71774e55aac4e1f9a22bea607b4b97d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fc8704e-5333-48b9-a80d-bb3f2626699c/how_to_pair_plantronics_plt_bluetooth_headphones.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_off0000ebb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB0 189228 bytes
SHA-256: f801fff33e4629d428caa10074662088962d1f5936a68c16b61d12a431a1c51d
font_01_sfnt_off000315d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315D8 5420 bytes
SHA-256: f5156f8463fb3515f132079b825f863a0f7ed9bd3f88a860994aa64de6c8b214
font_02_sfnt_off00032848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32848 11204 bytes
SHA-256: b698b3c8503fb1ec5acdbad21ee5fe193bbad67a8dd256be162631fab361d7f8

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