Malicious PDF — malware analysis report

Static analysis result for SHA-256 16f4dc0415737bf8…

MALICIOUS

PDF

73.5 KB Created: 2021-02-26 09:30:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a20e70fb96c8a5d4cde37f833b2ed435 SHA-1: 43f76296095fa25c2941ac8dac6af379e3a9e2c2 SHA-256: 16f4dc0415737bf8741a26bbc99ad82682292df729d3cdf1df33397b5e14983a
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://yafferge.ru/wix?keyword=destiny+2+strike+guide In PDF document text
    • https://cdn.sqhk.co/nosuterib/hcmjfKC/big_hunter_hearthstone_wild.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/XgesIXZ/32257018162.pdfIn PDF document text
    • https://cdn.sqhk.co/jatizaru/iiyuV2y/clash_royale_stats_download_windows.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/nipukew_fivedi_nilivatesiv.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/13237818979.pdfIn PDF document text
    • http://shopee24.site/nibupegekupefesotc2gey.pdfIn PDF document text
    • http://akb54.ru/77710684632z8eyd.pdfIn PDF document text
    • https://cdn.sqhk.co/wulozonixuf/jeFif1G/pipamabaredazaxifu.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/saduko.pdfIn PDF document text
    • https://cdn.sqhk.co/gubogezemazo/gBQGhgk/talozevoziv.pdfIn PDF document text
    • http://anarchymedya.com/el_sistema_solar_esta_formado_porfh3ik.pdfIn PDF document text
    • https://cdn.sqhk.co/dexasubu/ifhhcig/word_shuffle_game_download.pdfIn PDF document text
    • https://wivixape.weebly.com/uploads/1/3/4/8/134897282/dukakobijezuke.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/h8asjah/kulakapogagepeve.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/gfbifha/gatwick_strike_dates_2019.pdfIn PDF document text
    • http://sdek-24.cc/sakarumuvise5e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wonanikapudidak.atwebpages.com/what_can_you_mix_with_air_in_little_alchemy.pdfIn PDF document text
    • http://nopugorib.onlinewebshop.net/what_do_you_do_when_your_keurig_wont_brew.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_off0000e5a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A1 5048 bytes
SHA-256: 853058ace6ff777b59b7adc08e63a396c31573d0590ce65cfbca7a3ad8835fee
font_01_sfnt_off0000f6f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F3 9984 bytes
SHA-256: e347ba62f9c69c403db0c4ce1fcc8b42beefbd8f7663e971ae9137dace398274

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