Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a60ecc8dde9eef…

MALICIOUS

PDF

75.4 KB Created: 2021-02-15 16:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e862d8593abc642ff719fea77ba6ff76 SHA-1: e520814dd476713ac6045fce54e0cd192a3098ec SHA-256: a1a60ecc8dde9eef7ce03da37904e6ded740f23c4336ef7bdcd6a35f2a4cbf52
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically titled 'how to open garageband zip', suggesting a lure to a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded JavaScript, though obfuscated, further supports the execution of malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/strik?utm_term=how+to+open+garageband+zip PDF link annotation
    • https://cdn.sqhk.co/xunijejozi/cnVPjcW/stick_with_it_game_speedrun.pdfIn PDF document text
    • http://organicnu.info/873476380338h0k3.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/bgg7jhC/73906960664.pdfIn PDF document text
    • http://foyou.store/86356143710yc9lg.pdfIn PDF document text
    • http://toolsbestpricemicrometer.site/android_developers_beginners_guideaqbyk.pdfIn PDF document text
    • https://xivexibajewubud.weebly.com/uploads/1/3/1/0/131069970/subilobedi-sodutisurokax.pdfIn PDF document text
    • https://wakokozetu.weebly.com/uploads/1/3/4/3/134307835/nogiwavijije-xiruxajosijasi-sitedesizebopog.pdfIn PDF document text
    • http://wiruxenolap.22web.org/64966046913.pdfIn PDF document text
    • http://idealica-ituficiale.website/flumazenil_davis_drug_guide2e7j0.pdfIn PDF document text
    • http://makamar.online/bhojpuri_gana_dj_remix_mein0qets.pdfIn PDF document text
    • https://muwewixobajigu.weebly.com/uploads/1/3/4/3/134312624/mosema.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/hqcjc4Y/lupag.pdfIn PDF document text
    • https://cdn.sqhk.co/tupulezi/Y0gjjed/wifi_photo_transfer_app_iphone_free.pdfIn PDF document text
    • https://tilifopufobi.weebly.com/uploads/1/3/6/0/136049844/gidorazevopolure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sebubexegan.rf.gd/sipajodejujemifenewim.pdfIn PDF document text
    • http://lejaget.epizy.com/msi_afterburner_software_free.pdfIn PDF document text
    • http://nuvotadaxiti.epizy.com/40144890532.pdfIn PDF document text
    • http://zasuzutan.rf.gd/20_gauge_aluminum_sheet_thickness.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8AA 5160 bytes
SHA-256: da578799ca14554ea2b3b484711b745e67d6d6d3f85a24be0990a15446a82642
font_01_sfnt_off0000fa5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5C 11252 bytes
SHA-256: f759dd22cff4240b972a69d24b3930c4a1b5e3d7ebef6a758a05a37e47cc1cff

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