Malicious PDF — malware analysis report

Static analysis result for SHA-256 82ae5007f83e952c…

MALICIOUS

PDF

71.7 KB Created: 2021-02-21 21:08:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 71768d049ee327524d5926221c1cdfe6 SHA-1: b777122d67df14afbee0e5fb8242a60e7c54122e SHA-256: 82ae5007f83e952cf1faf28e61048cf518353686140584dd03bdb795691fbd20
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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=non+intercourse+act+apush PDF link annotation
    • http://org-fruit.space/virewizasevibijejewinoxifmioau.pdfIn PDF document text
    • http://sumomubidisuwo.iblogger.org/88807351279.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490519/normal_6001529bc0c97.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/iiUMtic/change_keyboard_keys_windows_7.pdfIn PDF document text
    • https://dopozigixojak.weebly.com/uploads/1/3/4/5/134509916/sogotopawixodez-bomurevilexufi-nemav.pdfIn PDF document text
    • https://nukanepinax.weebly.com/uploads/1/3/1/4/131454046/8760625.pdfIn PDF document text
    • https://dedeluruxizo.weebly.com/uploads/1/3/4/3/134305162/1613223.pdfIn PDF document text
    • http://aazzzry.space/fusiform_skeletal_muscle_structure8e48y.pdfIn PDF document text
    • http://comforfemj.fun/nujinowisotivakelgtgnv.pdfIn PDF document text
    • https://dakewamegiru.weebly.com/uploads/1/3/5/3/135305658/dugaxinitulox.pdfIn PDF document text
    • https://lefukumot.weebly.com/uploads/1/3/4/8/134887275/sogixinagiv_ledelafifemexo_lizezow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kurejaj.epizy.com/21810435740.pdfIn PDF document text
    • http://gizenelik.rf.gd/mystic_messenger_day_2_answers.pdfIn PDF document text
    • http://mitufesidu.epizy.com/irrational_thinking.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_off0000ddf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF2 4960 bytes
SHA-256: 99e7a3c54e50adc4ffce2b9f8f1633148a30e506995be28a8587fd1923f28a8e
font_01_sfnt_off0000eed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED1 10240 bytes
SHA-256: 14d617602f5089defe7ea75be775175bbdbcc9cdc9f2ac6c4a296eaf4eabbe61