Malicious PDF — malware analysis report

Static analysis result for SHA-256 979ac7da7dbd9a5b…

MALICIOUS

PDF

74.1 KB Created: 2021-02-18 11:49:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 7db2ab45e6575de000a8beb00be31339 SHA-1: 90e60d2ec5e6d9fd3e25d808da9bfe78953fd18b SHA-256: 979ac7da7dbd9a5b72fc6093ce2178bb3241ae2fc92e9fa9c45030c7a6f84f58
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many of which point to potentially malicious domains, as indicated by the PDF_SEO_LINK_FARM heuristic and ClamAV detection. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest an attempt to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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://maypoin.ru/strik?utm_term=wildlife+innovations+deer+feeder+parts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472216/normal_5ff40577c733c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475987/normal_5fd6708c2d82a.pdfIn PDF document text
    • http://lidlid.xyz/night_shift_brewing_lovejoy_wharfem4a0.pdfIn PDF document text
    • https://najovukuno.weebly.com/uploads/1/3/1/4/131453374/zelupiw-kewabe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490542/normal_6000b09882e1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_60228425af615.pdfIn PDF document text
    • https://bididanigatozum.weebly.com/uploads/1/3/4/3/134314142/b3748966d.pdfIn PDF document text
    • https://diriremipujuna.weebly.com/uploads/1/3/4/2/134265666/5703929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_60172aad98712.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/sejakopa/adobe_professional_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/gexewevewitoxux.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/34273464470.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/41730541374.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/xezivajamonazunibu.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/angularjs_interview_questions_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/lazodukudadekabidove.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_off0000e180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE180 5108 bytes
SHA-256: 6e3ef828a534dd90b8a8d516439268d2cb4a5abc29a56353443cf3add4d858bd
font_01_sfnt_off0000f304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 11344 bytes
SHA-256: 665b2e9a74585a0934f0b8d65d7da1a448c088d813c46bc35f8bef7c77431e2c

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