Malicious PDF — malware analysis report

Static analysis result for SHA-256 6960d2b7b0152dd2…

MALICIOUS

PDF

91.4 KB Created: 2021-02-27 21:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 9f767b12b668579a79cd0126212d9bfe SHA-1: d279b2da591c4f0652af653bc3f5421285758b40 SHA-256: 6960d2b7b0152dd26cb259b99caaa92aff4b9e3817de24de287ed9e75f7d0aaf
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external URIs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host many links on disposable domains, likely for phishing or malware distribution. The primary malicious URL identified is https://dugedepap.ru/wix?keyword=punnett+square+worksheet+questions+and+answers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/wix?keyword=punnett+square+worksheet+questions+and+answers PDF link annotation
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/9622240.pdfIn PDF document text
    • http://ashotik.space/rspca_sheffield_reportpobio.pdfIn PDF document text
    • https://bunutawopuzo.weebly.com/uploads/1/3/4/8/134868528/295fbca.pdfIn PDF document text
    • http://krokoboko3.xyz/modern_arabic_short_storiesb91zi.pdfIn PDF document text
    • http://topvideo.design/20058060672n5wpi.pdfIn PDF document text
    • http://gbo.guru/25093685416g42dk.pdfIn PDF document text
    • http://kirerazunesamip.22web.org/bixifomakejetonoturewapow.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/joganizepemeviva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450636/normal_5ff06b413270e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_6018a24067dee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466143/normal_60238bf46cf88.pdfIn PDF document text
    • https://fevebelok.weebly.com/uploads/1/3/4/0/134012800/414461.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jedadokuti/body_planes_and_anatomical_directions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/december_calendar_template_2018_excel.pdfIn PDF document text
    • http://narolojekidutaj.rf.gd/90590401210.pdfIn PDF document text
    • http://dojeranorered.epizy.com/mamolukizevomusigebavivor.pdfIn PDF document text
    • http://kotafonapajawut.epizy.com/how_to_work_a_brim_coffee_maker.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11447 5044 bytes
SHA-256: 7fae09884f0a3c80530627ca899b69a87350eb5cca489e6cbf56ec55007f1308
font_01_sfnt_off00012564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12564 2052 bytes
SHA-256: ea10ac11888e4c3a17eadae41f90357bc42b38d0373901c6a6c174c4234cab70
font_02_sfnt_off00012e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E18 10528 bytes
SHA-256: 3e8315b46ba83fa27cbe3273c4e8f4d6f9890d1c7aecce5632ee035892a3f750
font_03_sfnt_off000151df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151DF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.