Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa392f233e7ab49e…

MALICIOUS

PDF

72.5 KB Created: 2021-03-17 18:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 5645df1cddc4603bda18906e6af3a29e SHA-1: 0854ef094c74253848a6534524067f2ed6a8b4b1 SHA-256: fa392f233e7ab49ecd399e5664deab609d3376128afafacaab8bb6b2e950e997
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, including one pointing to 'bologen.ru' and another to 'raponikidosal.getenjoyment.net', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, indicates a 'mobile csp portfolio' lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=mobile+csp+portfolio PDF link annotation
    • http://raponikidosal.getenjoyment.net/sisumidagokipuzoxuderik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_6033ab5fa3a59.pdfIn PDF document text
    • http://sis-paypal.com/2004_dodge_ram_1500_quad_cab_bed_sizecmb9b.pdfIn PDF document text
    • https://cdn.sqhk.co/kepozote/uhdoXZl/ping_pong_paddles.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471706/normal_600d4b37d0c6a.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/bjajjhd/tolopadewitiwejojozog.pdfIn PDF document text
    • http://seomagnat1.online/cirque_du_freak_2020ac3p4.pdfIn PDF document text
    • http://clobuss.ru/ulver_themes_from_william_blakes_the_marriage_of_heaven_and_hell_download73q2v.pdfIn PDF document text
    • http://50offstore.info/bezawevolavikabuwivgpdd.pdfIn PDF document text
    • http://mbfsopg.com/27251306005xkq4i.pdfIn PDF document text
    • http://digitalmicroteter.xyz/31975730991vz1z3.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/tjeVZig/figamegok.pdfIn PDF document text
    • http://tryporte.xyz/39376163591pll7w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://77bc4ea4-de20-41c0-a463-a5315db628d9.filesusr.com/ugd/2c69e3_1e954e22472a4872b83dfe42c17e931c.pdf?index=trueIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_43af0bb7a13045abb22be9cc730c95af.pdf?index=trueIn PDF document text
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_454b4db3ecf14566a3d3cba7f0f7586b.pdf?index=trueIn PDF document text
    • https://2489a575-72f7-492f-b117-28cfe4a4d2a3.filesusr.com/ugd/d81705_26325881ff5a4abdaf685c050dfc19d5.pdf?index=trueIn PDF document text
    • http://wififeju.atwebpages.com/ophthalmology_clinical_vignettes_pemberton.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_off0000dd11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD11 4944 bytes
SHA-256: 85c11ad98b5db30f6781f9ea720ece5af5baaeb7a645a3a54b55c10349ac50cf
font_01_sfnt_off0000edff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFF 11136 bytes
SHA-256: 170c34bccfeb404add3878e9c502dade852d3fecc12014018752dfab398e6cb1

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