Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a7196102872e27…

MALICIOUS

PDF

75.4 KB Created: 2021-02-06 19:23:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 35e0af75aa8321a78b1b07b9d033da4f SHA-1: 59ea75cfc05908c111e01910890c38ce246146a7 SHA-256: 36a7196102872e2703ae4ee6de63dd6f33a806af1d574391a44021c2d248a4c9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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 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/aws?utm_term=last+word+quest+d2+guide In PDF document text
    • https://ziwagunu.weebly.com/uploads/1/3/4/8/134883986/kuzolijigonitis-tepasomelef.pdfIn PDF document text
    • http://ttttrrrr.space/black_guys_haircut_styleswmt0z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423780/normal_5feba23c3a7dd.pdfIn PDF document text
    • http://goodik.fun/17389057743v5vjk.pdfIn PDF document text
    • https://kidiveguworuriw.weebly.com/uploads/1/3/4/6/134677920/ac3f0630.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491412/normal_5ff9255329dbd.pdfIn PDF document text
    • http://fruct.space/19894txqz.pdfIn PDF document text
    • http://dragonflysagewellness.com/chess_game_free_download_for_windows_10_filehippo3j6a0.pdfIn PDF document text
    • http://instacopyrightcenter.com/8121434270605tmp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385228/normal_600c411c8e699.pdfIn PDF document text
    • http://allieshouseofhope.com/skater_sasha_crossword_cluejngr8.pdfIn PDF document text
    • http://zootime.store/dls_2019_uefa_champions_league_edition_apk1euzz.pdfIn PDF document text
    • http://fruitik.space/34856600364lhq7.pdfIn PDF document text
    • https://tekopazaxalar.weebly.com/uploads/1/3/4/3/134348639/81329111e0c1d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gexaforagugozen.rf.gd/reason_for_leaving_previous_job_answers.pdfIn PDF document text
    • http://povusesa.rf.gd/bugenarez.pdfIn PDF document text
    • http://guvamimifufirar.rf.gd/68843361610.pdfIn PDF document text
    • http://gitipezusev.rf.gd/isomerism_questions_and_answers.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_off0000e528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE528 5252 bytes
SHA-256: a4c09ed8129043b9a75beb484a467fb7be2d8ec7acb66713ffaeeaf97a282913
font_01_sfnt_off0000f722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF722 12848 bytes
SHA-256: 1e6d6d0c29286a4e62026c6eed34e3e12ebfe16f4d4d3984c0cb9cdab8e601bc