Malicious PDF — malware analysis report

Static analysis result for SHA-256 0485042aabc47f35…

MALICIOUS

PDF

161.3 KB Created: 2021-03-16 20:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbbfb0f774a398c07feae5d51dca8278 SHA-1: 5635155fc79db132949f031c06f240bd6712a200 SHA-256: 0485042aabc47f3539f31bdf0a2d603ab9ee310c09f32956a5336274c450c67f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search terms, directing users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=staten+island+ferry+maps
    • https://xowivana.weebly.com/uploads/1/3/0/8/130813667/remukulux.pdf
    • https://vorupegesozuzow.weebly.com/uploads/1/3/1/4/131453293/zavugoge.pdf
    • https://cdn.sqhk.co/zujarepifej/jbgiChi/maramec_spring_fishing_report.pdf
    • https://nerupeke.weebly.com/uploads/1/3/1/4/131483009/3115752.pdf
    • https://cdn.sqhk.co/subogutaze/whb8haP/software_house_ccure_9000_user_manual.pdf
    • https://satewode.weebly.com/uploads/1/3/1/4/131407014/9515435.pdf
    • https://cdn.sqhk.co/vibebexez/hjgcihY/wedafonefibokekugig.pdf
    • https://cdn.sqhk.co/kinuneba/cLkjh1W/9633176091.pdf
    • https://vosujesu.weebly.com/uploads/1/3/4/6/134646347/movijab-zabisajilajaf-mosexov-jumiwizu.pdf
    • https://cdn.sqhk.co/jipogidara/ge8hijb/4908017453.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tuxexi/xelibazokilesezezomi.pdf
    • https://8d94caac-80d5-4f6d-a73a-04ed47837dc1.filesusr.com/ugd/585b1d_48a2ce1df0f64af98788cf18f6376afb.pdf?index=true
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_218a4da6699b4beb97f05d5a09bc0814.pdf?index=true
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_9a69d7da850e458c935d13dc0cd70273.pdf?index=true
    • https://s3.amazonaws.com/poguvelefa/quaker_oats_malaysia_nutritional_information.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000227e8.bin
236515eefd3b92aa996e8a685d81606d99d8ae23e0d347d7b935d2fc9e77ae49
pdf-font-stream PDF embedded font (sfnt) at offset 0x227E8 5392 bytes
font_01_sfnt_off00023a2f.bin
1903e3f268bda721c0291612f76147242225bbdfc6858ba8105e50de912f3542
pdf-font-stream PDF embedded font (sfnt) at offset 0x23A2F 12064 bytes
font_02_sfnt_off00026301.bin
2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90
pdf-font-stream PDF embedded font (sfnt) at offset 0x26301 16060 bytes