Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46cd34499352eb1…

MALICIOUS

PDF

86.1 KB Created: 2021-03-09 01:46:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: b992a24fa328587f168c60ad8b6de268 SHA-1: 1592cedbbf578ab1631ff0cab432988aaade5f99 SHA-256: d46cd34499352eb1ac407af79c3f33c5621f994acd0510f1941f037d86d3b962
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or phishing campaign. The primary URL, 'https://soxebez.ru/strik?utm_term=how+much+is+neil+degrasse+tyson+worth', is presented as a search result, likely to entice clicks. ClamAV detection and ML classification confirm its malicious nature, indicating it's a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=how+much+is+neil+degrasse+tyson+worth PDF link annotation
    • https://nebobaxewakizix.weebly.com/uploads/1/3/1/6/131637309/7d2ffdc5.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/6630244.pdfIn PDF document text
    • https://dipediras.weebly.com/uploads/1/3/0/7/130739778/d1848f90.pdfIn PDF document text
    • https://jifalutisapore.weebly.com/uploads/1/3/4/7/134772579/funinawonojavi_niletobuloxuvig.pdfIn PDF document text
    • https://rumikupim.weebly.com/uploads/1/3/5/3/135310872/3730032.pdfIn PDF document text
    • https://wozizagozesa.weebly.com/uploads/1/3/4/8/134848764/2566057.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5fdda766d601b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446151/normal_60291f721acd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454672/normal_601a3c54760d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_60405df985da5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486987/normal_60148595d5ec0.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/sonutopexaramuf/tewijexonuzuvojase.pdfIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_46b50d9a6f024fea88b47aeee298515d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/hutchison_telecom_annual_report_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/465ed1ee-1069-43ce-b10f-c526e8f2de3f/where_is_truist_located.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/wijofudilowusiposag.pdfIn PDF document text
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_e393f6816b0d4a699db300b6d55337c6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/73219240-4d6f-4f68-8545-d2a6ee6cf732/diono_radian_3rxt_rear_facing_limits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ac0f09-3014-4905-95e7-1f0bb03c103d/cooks_essential_pressure_cooker_sealing_ring.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9da03382-0c48-43dd-b98f-a70524580653/108191632.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/aisc_column_base_plate_design_guide.pdfIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_40238f035b1c443ca6c732c35c540d3f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/tn_bill_of_sale_for_car.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_off00011481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11481 5508 bytes
SHA-256: 2c81fa1ace2cc7342cf45bea0e618145fd0f6c666ffdc9cdde0a0a3e2629cb5a
font_01_sfnt_off00012726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12726 10316 bytes
SHA-256: 13b5617ee5cd98cd7583d3e80d69b409ebb501b99949997c2939fc2fcdcc17ee

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