Malicious PDF — malware analysis report

Static analysis result for SHA-256 062097e76ae27691…

MALICIOUS

PDF

77.1 KB Created: 2021-05-04 06:34:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 08e5aa40a87fdf14e67b145873673b7e SHA-1: 20bf2253e884b2850c5bd206de167bfe2f895bc4 SHA-256: 062097e76ae276913b2520a0961cbb304b1ce30b492b3079cc8a5c40eb693370
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs, one of which is associated with a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The document body, though truncated and obfuscated, contains a reference to 'PS4 power button and eject won't work', likely a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=ps4+power+button+and+eject+won%2527t+work PDF link annotation
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://phtech.site/lavejaqhkvx.pdfIn PDF document text
    • http://tokepubex.getenjoyment.net/63330356401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456389/normal_60651e32e4d60.pdfIn PDF document text
    • http://kushtanash.ru/44968917751roljn.pdfIn PDF document text
    • http://5coupons.info/wufokobejotuzopuxewelixffs2x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418013/normal_6068f8d6392f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_6030de913aa16.pdfIn PDF document text
    • http://idealica-italiaoficial.site/sony_playstation_vita_slim_pch-2000x3na0.pdfIn PDF document text
    • http://peuer.xyz/the_bride_julie_garwood_free_download1qt5n.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://bibavovomid.22web.org/live_sports_tv_hd_android.pdfIn PDF document text
    • http://kidobujugi.mypressonline.com/balanopostitis_tratamiento_adultos.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/c839e80d-082d-49bf-9d4c-0c393869380a/genuine_honda_power_steering_fluid_vs_prestone.pdfIn PDF document text
    • http://saninov.epizy.com/wamegisigibekegovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ec1da58-f123-41e3-9034-639082e0e662/xudunibuwaluwusutovumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e817359-68e8-4a89-958c-799641115f07/left_behind_books_in_order_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a7c417-d27a-4629-9c9c-f5b6ee918768/tefijomutejuzoda.pdfIn PDF document text
    • http://nofojifasuxow.epizy.com/adobe_editor_online_tool.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3765042c-0988-412c-b6ad-5f488f98bdf8/xakifuvuzafiturik.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_off0000ecc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC5 5532 bytes
SHA-256: e8a10a1ad645d04a612d529b2451f8f7df72ade5d038f063f4b93be63e353497
font_01_sfnt_off0000ffbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBE 11532 bytes
SHA-256: 54bde266f4aa2fc74ff0712544988e9fcf797dee9cf773f09fc30713919c728f

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