Malicious PDF — malware analysis report

Static analysis result for SHA-256 a397e79afdebf02b…

MALICIOUS

PDF

71.1 KB Created: 2021-02-13 10:52:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 923cdeb0f5e76d4513404508d9e10ce4 SHA-1: 974b58860dbe015ea598475fceb2336c0abe612c SHA-256: a397e79afdebf02be79376f7d302d1bec3073d8ecc843d12a0021614e2ee4489
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://baarspo.ru/wix?keyword=prairie+heights+bismarck PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421476/normal_601ae2625f3b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417656/normal_5fe7975dd9091.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368975/normal_5feb1f2192419.pdfIn PDF document text
    • http://kufigada.22web.org/free_template_powerpoint_medical.pdfIn PDF document text
    • http://just-gopro.com/zirewisuwoa61pe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474457/normal_600fc1da32e0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449599/normal_5ffe51e295510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404524/normal_60147622bb2f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476938/normal_601be59e5596c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410988/normal_60233a551869a.pdfIn PDF document text
    • http://retys.fun/coreldraw_to_converter_online_freehl5vm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pujusojup.epizy.com/before_you_were_born_book.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/47240991257.pdfIn PDF document text
    • http://ruxopagotar.epizy.com/10848993849.pdfIn PDF document text
    • http://vejozawuxurenij.rf.gd/fegudoxoka.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/aduro_dash_cam_manual.pdfIn PDF document text
    • http://fasipubaweguguf.rf.gd/my_beautifier_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/vurevogete.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/fuponox.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_off0000d9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CA 5384 bytes
SHA-256: 940c5d47f0269ac75395ff892a199382009f101c637d966da050f4ec9cdf4c1a
font_01_sfnt_off0000ebf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF4 10488 bytes
SHA-256: 45cbb2a606e127d0f97ac4ac86b6bfa7e6e8ffb7b5f3ccd4e3892991f06843a7