Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e10216ca79816d…

MALICIOUS

PDF

76.9 KB Created: 2021-03-01 19:42:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e38c07f0b04d16318d99c533c59f979b SHA-1: 2df0b0b90942a0befa136c2f18b2196c84d7216f SHA-256: 01e10216ca79816da031c8355d21b562fc0f5b3ab406fbbadc699591e48ac81f
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on cloud storage and personal websites. One of these links, https://botokaw.ru/123, is flagged as an external URI. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous external links suggests the PDF's primary function is to redirect users to malicious content.

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 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.
  • 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://botokaw.ru/123?utm_term=geometric+sequence+formula+common+ratio+calculator PDF link annotation
    • https://xejinifinedi.weebly.com/uploads/1/3/5/3/135305438/219478c80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416791/normal_5ff65dbdabea7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499282/normal_600e8737acec8.pdfIn PDF document text
    • https://gejowarog.weebly.com/uploads/1/3/2/7/132740172/bijen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_60106dd568f8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484605/normal_60090abd80659.pdfIn PDF document text
    • https://wizenifove.weebly.com/uploads/1/3/4/3/134308138/sovet-xifuvaxofa-xuzesike.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377113/normal_5fed18133bcd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_600d274f97054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419452/normal_601aa21ff156a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377120/normal_603c57a24a0f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486748/normal_5fe400580baf9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411694/normal_5fe01611aabf9.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/difigomisosak/jofigudadebozotutuminadez.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/nukodojepuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/mepabaroviwexukozoxa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F6 5064 bytes
SHA-256: 85b03a2d0b7033ed0af90877f62c61a616d57854531626880ae7e780f7a50400
font_01_sfnt_off0000f31d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31D 10772 bytes
SHA-256: 360178f59e8270065cf67bc857e1fc421bc811fb4cc1cd09a280203c2187465a
font_02_sfnt_off00011822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11822 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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