Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1b2626aaab6084…

MALICIOUS

PDF

74.4 KB Created: 2021-06-11 03:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23f686294faf0be50eeeb11dd842e26e SHA-1: d47e4793bddbc8dfd723a92c12db4ee0719efe7f SHA-256: 6b1b2626aaab608482aac1f0d19400b6d867b0f64ba15500e9339b7602c6448c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution. The presence of a URI suggests an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://wastran.ru/pbw?utm_term=igo+2018+europe+maps+free+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e2c1277d-a5ea-4071-a030-a2b431e21645/harry_potter_fanfiction_hermione_and_the_founders.pdf
    • http://poforezufovu.pbworks.com/w/file/fetch/144456657/genetic_problems_punnett_square.pdf
    • http://zorisomofi.pbworks.com/w/file/fetch/144554178/g-code_sender_for_grbl_candle.pdf
    • https://uploads.strikinglycdn.com/files/2fe8ec84-9d8b-479c-b031-f2371a714b20/dead_suns_adventure_path.pdf
    • https://uploads.strikinglycdn.com/files/cea2d2bc-3795-4fd1-b779-febf774d626e/83606608200.pdf
    • http://xulajirose.pbworks.com/w/file/fetch/145004160/kebekotidivobedid.pdf
    • http://wudiwiligis.pbworks.com/f/daf_kompakt_a2_intensivtrainer_lsungen.pdf
    • https://uploads.strikinglycdn.com/files/29fc72f6-6dc7-4c8c-8a76-ab70253db178/download_apkobb_gta_sa_lite_mod.pdf
    • https://uploads.strikinglycdn.com/files/bf1f65df-79ef-428f-8133-c39826824711/589660166.pdf
    • http://poforezufovu.pbworks.com/w/file/fetch/144451914/netflix_mod_apk_100_working.pdf
    • https://uploads.strikinglycdn.com/files/fc3c7fa3-4942-403a-997a-4fadcaeccae9/29634663400.pdf
    • https://uploads.strikinglycdn.com/files/1a2813eb-982c-465f-a137-70505fd7a93b/is_miss_usa_cancelled.pdf
    • https://uploads.strikinglycdn.com/files/21cd234b-0d60-4ffb-b63a-38a0cb5068e2/gejidagititudo.pdf
    • https://uploads.strikinglycdn.com/files/92b2adc4-310b-424a-aecf-279946d5a62b/dillon_650_9mm_conversion_kit_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/664e6bf3-bc1a-4903-ba38-18a4b6009ecf/xovuridod.pdf
    • http://kunozulig.pbworks.com/w/file/fetch/144548130/delupi.pdf
    • http://nilanom.pbworks.com/f/ruwumivativi.pdf
    • http://lopimexoxe.pbworks.com/w/file/fetch/145022112/96856794138.pdf
    • https://uploads.strikinglycdn.com/files/99382906-eb5c-4379-b8d7-4bafde3a6984/kilijegasibobe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e29d.bin
95c09380eea0851dbf70633672e19609469ae738b04d57a8518d80c934cfc7b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE29D 5912 bytes
font_01_sfnt_off0000f6c6.bin
84c0101801469fc3ad27919f95165e7b43488e69485ef62ca388f5a5de950b1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 11104 bytes

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