Malicious PDF — malware analysis report

Static analysis result for SHA-256 8acab19d7d665ddf…

MALICIOUS

PDF

75.4 KB Created: 2021-02-28 15:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6582142d382054ec4eadaeeee0a54fe5 SHA-1: 5a493fedfdb6c1ddb88f980e8ff5dfa232026d1a SHA-256: 8acab19d7d665ddff8d0c8ae647563d36f95cc9c33b708a8a234c0816fad1fb2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=confluence+prep+high+school PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413120/normal_60073c51d0b53.pdfIn PDF document text
    • https://latiniwujuxemuw.weebly.com/uploads/1/3/3/9/133997677/jenekurixarugufikab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407100/normal_5ff0b2646ea48.pdfIn PDF document text
    • http://onlineeshop24.xyz/pepawudikedekatsa7jx.pdfIn PDF document text
    • http://edevletorg.com/kopokopopibadobolo71j6f.pdfIn PDF document text
    • http://leafester.online/minecraft_game_free_uptodownaa4gw.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/which_obd2_scanner_is_best.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/tp_link_powerline_forgot_password.pdfIn PDF document text
    • https://xamoguxa.weebly.com/uploads/1/3/0/8/130874300/mutijukejowux.pdfIn PDF document text
    • https://vunorozixu.weebly.com/uploads/1/3/1/1/131163876/3709386.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490929/normal_6018d7f7d6937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470220/normal_5fce2289955f1.pdfIn PDF document text
    • http://dujojiwasemob.mywebcommunity.org/17175884046.pdfIn PDF document text
    • http://lapitubemexidi.mywebcommunity.org/lalerasexegu.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/positive_psychology_study_online.pdfIn PDF document text
    • http://moitender.org/mixer_allen_heath_gl2400_16crrod.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/dumujezila.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/fowikorejodi/47984923929.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_off0000eb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6F 4972 bytes
SHA-256: c23b742503a6eb6b7235854f671782db8350e2589da79742413e9b31e13637d2
font_01_sfnt_off0000fc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5D 10660 bytes
SHA-256: 669b99e2f11196ebb33b4631c4790ad0bf59ae370279993768b303a056e70e4b