Malicious PDF — malware analysis report

Static analysis result for SHA-256 055551bcc05b36bc…

MALICIOUS

PDF

86.0 KB Created: 2021-03-17 09:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 037334fe12132a680122f00e07ea9e5b SHA-1: 005a0fd3b186d2c83c33790355f5f979263b0cda SHA-256: 055551bcc05b36bc1ce39ee92f7fa9b58b1c5d5dce82c818cb45262bbf74577e
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged by ClamAV as Pdf.Phishing.Trojan. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dugedepap.ru/123?utm_term=watermark+maker+software+free PDF link annotation
    • http://antonioita.fun/9120061522080ul0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443804/normal_5feba21d21357.pdfIn PDF document text
    • http://garantiya62.ru/wunowufuzavojsjpne.pdfIn PDF document text
    • https://cdn.sqhk.co/zulatobi/eYPihgi/start_em_sit_em_si_week_5.pdfIn PDF document text
    • http://nubilofanekib.mygamesonline.org/livro_assertividade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456671/normal_60074d3e04ffe.pdfIn PDF document text
    • http://extraterrestrials.space/the_bell_jar_novel_download7ya8q.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/how_to_make_liquid_glycerin_soapeg00y.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/10445147101.pdfIn PDF document text
    • http://mybiol.site/85568505572dbkuf.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/idjiphf/hybrid_animals_mobile_game_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/kifukuvitog/wojjgdQ/bonaselurinixilala.pdfIn PDF document text
    • http://wikotimu.scienceontheweb.net/how_do_i_take_a_screenshot_on_windows_7_with_keyboard.pdfIn PDF document text
    • http://gedatidigog.sportsontheweb.net/english_words_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487186/normal_602d970cda3b5.pdfIn PDF document text
    • https://cdn.sqhk.co/detazido/jjjdjhW/hard_boiled_eggs_time.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/pumokutawigujururusip.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/icom_756_pro_specifications.pdfIn PDF document text
    • http://erogancolumbia.site/when_did_the_us_recognize_israeltizz5.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/fO1ie6Y/line_official_account_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453333/normal_5fefb5eea3e7c.pdfIn PDF document text
    • http://stebsmeh.space/numawekadawexuderodab41bag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vigavanoxe.onlinewebshop.net/muvozedunarebigetuxif.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/what_is_the_best_source_for_stock_market_news.pdfIn PDF document text
    • http://penanaras.myartsonline.com/how_to_make_a_pallet_jack_go_up.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BD 4684 bytes
SHA-256: c1ff83f35f3076ad908ca9324a151fb6bd0f499380bedb88d350ac46e1abd167
font_01_sfnt_off000115bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115BB 11524 bytes
SHA-256: bcbc215dc954310d1eb5d1e53977427a9e8dacf12e71800e0d4589f5b48a81e2
font_02_sfnt_off00013c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C27 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.