Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c433971a94c12c…

MALICIOUS

PDF

183.8 KB Created: 2021-03-30 08:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f15367b82978ad37457023591b9e8cc SHA-1: 819d7125a10e2561c5fd91a13e7e3c280a14b681 SHA-256: 10c433971a94c12c96c89cba9a4c8c6773209a6e931612af7f50bff316bdf6e3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website seemingly offering a manual for a Craftsman radial arm saw. This is a common social engineering tactic to trick users into visiting a potentially malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=craftsman+10+inch+radial+arm+saw+2.5+hp+manual
    • https://gosasaweju.weebly.com/uploads/1/3/1/3/131384289/1104050.pdf
    • https://vejikawotepux.weebly.com/uploads/1/3/4/8/134887167/6139292.pdf
    • http://fipelofi.22web.org/29557160400.pdf
    • https://jawogebewo.weebly.com/uploads/1/3/4/3/134369376/zozawutajiz-bosibesu-vivanumaxe-rowej.pdf
    • https://nonafinawajag.weebly.com/uploads/1/3/4/3/134331790/9345170.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tuxalazurasel.epizy.com/aplikasi_bri_mobile_untuk_hp.pdf
    • http://mupefapakag.rf.gd/38146361542.pdf
    • https://s3.amazonaws.com/zifozujiwi/10866177963.pdf
    • https://s3.amazonaws.com/pusixa/99235501736.pdf
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_8c1a0cf1d0f64f26ac45b37d8a0ea4aa.pdf?index=true
    • http://gutuneze.rf.gd/54139229603.pdf
    • http://vaxesopubowutuf.rf.gd/17370907519.pdf
    • http://tozuduxaxikagik.rf.gd/bul_bul_kannada_film_video_songs.pdf
    • http://pulupalu.epizy.com/tiruguxufobakapamufote.pdf
    • https://8a833fea-7c9a-4d2e-a5a7-d3590f42a3e5.filesusr.com/ugd/9aab09_d533e2cda58e44b89d69bcd5d6d09d34.pdf?index=true
    • http://nugejumejopilok.rf.gd/84214490719.pdf
    • https://a8a2d6b8-6248-42a0-90a4-e25e421c2e59.filesusr.com/ugd/f63f29_0d59cf39afae46c5a4394ced287a247d.pdf?index=true
    • https://s3.amazonaws.com/petuzutemixuvod/casio_pathfinder_watch_manual_3134.pdf
    • https://s3.amazonaws.com/bulozor/canada_visa_application_form_signature.pdf
    • https://s3.amazonaws.com/mejifavo/the_depths_of_despair_osrs_guide.pdf
    • http://bavubuseji.epizy.com/80541453170.pdf
    • https://s3.amazonaws.com/guvovigo/bazuraf.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028f6e.bin
0628393f19eb2f59b0216c226514c0beb350e9c6208dd2e1a1145aeef266bae7
pdf-font-stream PDF embedded font (sfnt) at offset 0x28F6E 5872 bytes
font_01_sfnt_off0002a362.bin
90472360d62b8c63037746c73c6a319ce42999da0a62dcc0c792c76301e75030
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A362 13356 bytes