Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa201753bbe2c7fc…

MALICIOUS

PDF

74.0 KB Created: 2021-04-10 07:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c42b340003334df3da581a0b718815c SHA-1: 7d5b6fdeeb53f93f4c485f4be899be263b4eb3e2 SHA-256: aa201753bbe2c7fcd0e6e8a5c60be447ae6fbed73d1fe85c9fc9bd5ea3f08535
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to guitar chords, suggesting a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/strik?utm_term=your+grace+is+enough+chords+guitar
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/gelefop_rojir_gilebufopafa.pdf
    • https://cdn.sqhk.co/noviraxat/geVgho1/gexolotemuta.pdf
    • https://ragurinibobuma.weebly.com/uploads/1/3/3/9/133986244/bonefavep.pdf
    • https://static.s123-cdn-static.com/uploads/4412159/normal_5feef8d4ec0ca.pdf
    • https://vusexojepaxeva.weebly.com/uploads/1/3/4/0/134096357/tawigojaloridusok.pdf
    • https://cdn-cms.f-static.net/uploads/4374360/normal_600ce229243ab.pdf
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5ff2ac4ae1051.pdf
    • https://donedupefunesu.weebly.com/uploads/1/3/1/6/131607777/1bbf746.pdf
    • https://cdn.sqhk.co/dewufidabo/gfjjBuc/did_you_know_funny_facts_with_images.pdf
    • https://static.s123-cdn-static.com/uploads/4367951/normal_6001b73e1ab39.pdf
    • https://tewafegode.weebly.com/uploads/1/3/5/3/135350941/9540173.pdf
    • https://cdn.sqhk.co/juxezijafoz/Fib04ak/karujig.pdf
    • https://cdn.sqhk.co/moxofudifafi/ejbiiYZ/cartoon_single_bed_sheets_online.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/minegikukovel/cambridge_primary_school_uniform.pdf
    • https://s3.amazonaws.com/gosete/gibuxetofeloruko.pdf
    • https://uploads.strikinglycdn.com/files/cf866f6b-cb73-49cf-9344-139e54096853/how_to_fix_printer_not_responding_canon.pdf
    • https://s3.amazonaws.com/muxegeza/40176400950.pdf
    • https://s3.amazonaws.com/mejigavukolu/48922477545.pdf
    • https://uploads.strikinglycdn.com/files/1c9f3ff6-cdc6-4150-a321-3636786741c6/audre_lorde_sister_outsider.pdf
    • https://uploads.strikinglycdn.com/files/e33e2c71-d839-4398-891e-42c04cba86e4/why_is_my_google_maps_not_updating.pdf
    • https://uploads.strikinglycdn.com/files/eeeda7e7-d5f7-4658-a2b4-74917f50ffa7/what_are_the_seven_principles_of_internal_controls_and_what_is_the_purpose_of_each.pdf
    • https://s3.amazonaws.com/vatakefojunib/farem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7ed.bin
505bfa93f706667e912839da9016b20508537a647880be7942233b82522babea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7ED 5012 bytes
font_01_sfnt_off0000e8ec.bin
d073282e60f5ba327766868710c0590ec0782d0ee49275defb36d50ab710fb40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EC 9808 bytes
font_02_sfnt_off00010a97.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A97 4324 bytes

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