Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cab34d0c4d5ac51…

MALICIOUS

PDF

70.9 KB Created: 2021-02-22 11:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 689383cf1a22ec078e8c5e185e937eb7 SHA-1: 90850a713f99c834005b9d43e3d48bcc9605be76 SHA-256: 5cab34d0c4d5ac518cb78fb5a5ce92bf2af8553f7ca632012f8fd1f48620430c
186 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
  • 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://baarspo.ru/wix?keyword=monster+quiz+questions+and+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417543/normal_60113d93675a1.pdfIn PDF document text
    • https://nezozavigarej.weebly.com/uploads/1/3/4/7/134727028/furinelarib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478131/normal_5fd973509bd57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448545/normal_6021f4f5c7a0b.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/e6182200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462059/normal_601b1a6b2bdd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529697/normal_5fcb061e771b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503390/normal_5fc9dccbef185.pdfIn PDF document text
    • https://movojedafep.weebly.com/uploads/1/3/0/8/130814843/tetovej-lajugemajufam-wipodedazobazo-mekorot.pdfIn PDF document text
    • https://rijadotijijani.weebly.com/uploads/1/3/4/4/134470018/bopomuriwo-zotaw-nadamusep.pdfIn PDF document text
    • http://it50life.pro/bejagopewakikeradepote4mdwd.pdfIn PDF document text
    • https://sulomotosepotu.weebly.com/uploads/1/3/4/7/134744650/loxagapadufovetur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_5fcdb7602a719.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490534/normal_601d634acab02.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/dutuzanob/kilarikabaxofiput.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/miweledibofewebita.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/cute_doll_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/pagiwefapabikiduwoj.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_off0000da94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA94 5060 bytes
SHA-256: ceca205a9335d5e4ac163c59ba8988f1c30035bf1b5c0db82e7b83dacaac7227
font_01_sfnt_off0000ebf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF5 10168 bytes
SHA-256: c45b9eead3dc66c1e50637905893b03d7779a40627237bd1196a92a8033d9710

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