Malicious PDF — malware analysis report

Static analysis result for SHA-256 f55f3da8df0bad2b…

MALICIOUS

PDF

76.7 KB Created: 2021-03-15 08:12:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 89e00b6b30fef927bb240d2a1e645897 SHA-1: f1dbb3302b97d5bbc09c98e48d6553e45e7959fb SHA-256: f55f3da8df0bad2bf80322cb5360b313680fea98cb973c44ea73eefd89a19cbc
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing attempt to redirect users to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to 'standar akuntansi pemerintah pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=standar+akuntansi+pemerintah+pdf PDF link annotation
    • http://ligumexijigab.getenjoyment.net/64792525897.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/pro_presenter_big_sur.pdfIn PDF document text
    • http://lotukaguw.sportsontheweb.net/xamomasixipoxavakenesi.pdfIn PDF document text
    • http://fanutoragozogow.sportsontheweb.net/pokepubusupoxoragirojujes.pdfIn PDF document text
    • http://netolenogafa.getenjoyment.net/beautiful_liar_zara_cox_espaol.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/b2044fd4-9268-4d04-90ea-45538a9227e4/20109707720.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/66234827211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67d5e855-2f05-4949-98f3-b071c41311ea/35573179810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6df4deb4-d733-4fca-9eda-d72f52224bee/54359169480.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/67338540696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ff13fc9-1bc1-4d5a-823d-dedea2b87523/why_is_my_hp_printer_not_printing_correctly.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/bakeviferomivalexege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/338edc0b-7f42-4519-9088-afb107ce6728/kung_fu_panda_legends_of_awesomeness_enter_the_dragon_game.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/76113983944.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/seating_chart_template_excel_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2ca025e-3d8c-4979-bdf5-c49254b8e063/dapofogapuju.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/34093487831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c085ef9-782c-4356-bfa3-3e97e1565ba6/6531009447.pdfIn PDF document text
    • http://vuzuwukef.atwebpages.com/pawukaxewedelofox.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/15047594693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203028ed-bab4-480c-ab8f-bdc1fb688cb7/occult_america_mitch.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_off0000efd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD8 5416 bytes
SHA-256: 681d8c24d90653759dacd7bb36c9f0219518da6320d538f656c698c1519c32ed
font_01_sfnt_off0001021e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021E 10364 bytes
SHA-256: 584cb804debcf44e93494aa643e66f46a6ad839259dd87e522e3be9022ca26ce

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