Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e142b93f7e09dcb…

MALICIOUS

PDF

73.8 KB Created: 2021-02-22 16:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 894770415ad7c26f058b8e6bcfb83c15 SHA-1: 50b78f25160b777b288491f31f5974b83ffac0e3 SHA-256: 6e142b93f7e09dcba2d7da1e16d07c83cda54fe96f14d445add3f667932bfda2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=andromeda%20strain%20movie%20trailer In PDF document text
    • https://cdn.sqhk.co/fekolisuzub/QHjcjjB/53720935330.pdfIn PDF document text
    • https://jupaxegusuwe.weebly.com/uploads/1/3/5/3/135389123/fewuwower.pdfIn PDF document text
    • https://fogojokiverowur.weebly.com/uploads/1/3/0/9/130969702/41f51e38ba58.pdfIn PDF document text
    • https://zojunakalej.weebly.com/uploads/1/3/2/6/132682915/255d085b7036350.pdfIn PDF document text
    • https://cdn.sqhk.co/palazawu/jiWH2hj/tisovuxujikamidewawit.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/oYokidT/had_a_bad_day_at_work_quotes.pdfIn PDF document text
    • https://rotonozi.weebly.com/uploads/1/3/5/3/135315410/kuxadixevakexonibodu.pdfIn PDF document text
    • https://cdn.sqhk.co/zibepidok/rWDAiaD/27564669046.pdfIn PDF document text
    • http://gomijojupi.iblogger.org/68911006822.pdfIn PDF document text
    • https://sevozinevuzejok.weebly.com/uploads/1/3/4/9/134903388/xavamejanad-zigikafivowezi.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/fvqggpJ/sport_maxx_rt_235_45r17.pdfIn PDF document text
    • http://xatamekele.iblogger.org/anaconda_1_movie_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/dagizonu/xg5Utia/assassin_s_creed_valhalla_gameplay_part_1_deutsch.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/Whjgchg/magic_warehouse_miami.pdfIn PDF document text
    • http://vojupobakovax.iblogger.org/vupunogonaxikiwezow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/rikase.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/16645959044.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/c_c_group_annual_report_2018.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_off0000e40b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40B 5020 bytes
SHA-256: 42265440a8764929187db4e1b75507796a8d48bf03b8d2f5736aae3685131329
font_01_sfnt_off0000f505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF505 11000 bytes
SHA-256: f9f293c61ee31daa91dbae4a37260f796554c010539eda3584a285e3c4826ce6

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