Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cad9bf72369340…

MALICIOUS

PDF

79.4 KB Created: 2021-03-10 22:46:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94b890eb61e58e28d5feb8faf8491100 SHA-1: ddfa98e2143c4b47df8d1c34983d0e567571c0f3 SHA-256: 17cad9bf72369340f0159471ad26cd020b9bc48ce7a59f31293cc59e938e136f
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a lure for downloading content, likely leading to a phishing or malware payload. While no scripts were explicitly extracted, the PDF structure and embedded URIs are commonly used to host malicious content or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/award?keyword=blueprint+psychiatry+pdf+free+download
    • http://granitmetrospecstroy.ru/bonigefutadixawprica.pdf
    • https://sufudoni.weebly.com/uploads/1/3/4/8/134853368/c3b48c756971.pdf
    • https://sisumojixidew.weebly.com/uploads/1/3/4/3/134355683/romulib.pdf
    • https://cdn.sqhk.co/lokiwejawe/nihL5jg/domino_s_delivery_driver_pay_2020.pdf
    • http://vipmanmarket.space/diary_of_a_wimpy_kid_5_full_movieqxo8m.pdf
    • https://cdn.sqhk.co/fasegibuniz/bjhchfN/goden.pdf
    • https://cdn-cms.f-static.net/uploads/4478716/normal_5fda8fd6d5c0c.pdf
    • http://kemytbok.xyz/45943761046odz8h.pdf
    • https://cdn.sqhk.co/wusezofetib/2hNjdxQ/counter_terrorism_intelligence_analyst_jobs.pdf
    • http://pasendapp.online/rotekavebavofabikiz45zdc.pdf
    • http://sogixusi.medianewsonline.com/arbonne_pumpkin_protein_powder_recipes.pdf
    • http://jixewelo.scienceontheweb.net/segekusududitex.pdf
    • https://cdn-cms.f-static.net/uploads/4366028/normal_6044ce4a74436.pdf
    • https://static.s123-cdn-static.com/uploads/4473938/normal_5fd07924be71c.pdf
    • http://haustova.com/mv_master_video_status_maker_app_download_apk32pz5.pdf
    • https://cdn.sqhk.co/jekidase/DXggRgd/dexizesalagaxufipilup.pdf
    • https://cdn.sqhk.co/livukigelo/gcjc3yj/25642354814.pdf
    • http://goldenframecollision.com/gacha_life_edits_boy_and_girlznodc.pdf
    • http://itdiscount.info/sarugumasigiralow500jj.pdf
    • https://static.s123-cdn-static.com/uploads/4484994/normal_5fe5d3e4bdedd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sofibimibojas.myartsonline.com/87560158932.pdf
    • http://lixugafepujijoj.onlinewebshop.net/cant_help_falling_in_love_piano_chords_sheet.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_off0000fb24.bin
c080d1df7821631cf388566c502942a5edc494b03cd563c40dfa6f86f7257311
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB24 5484 bytes
font_01_sfnt_off00010ddf.bin
4fa9320a00aa063ebb1b42eaf7e0b90b2e1ef825d0c11c215241a2af759e7365
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDF 9936 bytes