Malicious PDF — malware analysis report

Static analysis result for SHA-256 f361c616562e8a97…

MALICIOUS

PDF

71.0 KB Created: 2021-03-23 12:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fca9a8cb8fd7c77f831ebb3b7051fbf SHA-1: 7064a842d5c96f19e38a63e65ae8b045b02b8130 SHA-256: f361c616562e8a977e9a96606a9816db6103a8839e1926c37e5b4887bfd3fd96
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of external URIs and the overall detection profile suggest this PDF is designed to redirect users to a malicious site, likely for phishing or malware delivery.

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://druttle.ru/award?keyword=acordes+de+acordeon+de+botones+en+sol+pdf
    • https://cdn.sqhk.co/rapigufagi/KNahijb/31228743513.pdf
    • https://cdn.sqhk.co/zuronenom/jghkjaz/granny_smith_applesauce_motts.pdf
    • https://cdn.sqhk.co/raserijene/g95jeb2/nomudabozi.pdf
    • https://cdn-cms.f-static.net/uploads/4419637/normal_604e202839c6a.pdf
    • https://static.s123-cdn-static.com/uploads/4411917/normal_5ff4fc1e9d247.pdf
    • https://cdn.sqhk.co/banamasuvaj/jdSMGp5/97283980064.pdf
    • https://cdn.sqhk.co/jesotipo/gduifgI/dead_zombie_shooting_target_zombie_games_3d_apk.pdf
    • https://cdn.sqhk.co/rifarako/lgdgfgc/39091601717.pdf
    • http://vizazovabula.mywebcommunity.org/arditi_il_bacio.pdf
    • https://cdn.sqhk.co/muwazubivotu/Utjhaz2/mimpi_digigit_ular_di_kaki_artinya.pdf
    • http://gatofupimekow.mywebcommunity.org/google_to_ms_word_converter.pdf
    • http://zekojotewakugag.mypressonline.com/6289541107.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lekizopiloref/how_to_diagnosis_ectopic_pregnancy.pdf
    • http://nununad.myartsonline.com/toragipaxezivafika.pdf
    • https://uploads.strikinglycdn.com/files/97386c17-9b34-4b7d-8880-95ba34c39546/9675785647.pdf
    • http://lafagelupuf.myartsonline.com/logical_and_physical_design.pdf
    • https://uploads.strikinglycdn.com/files/a2d2aebe-de41-4d88-9213-4a525ad4cfec/waxopamakevutomusof.pdf
    • https://s3.amazonaws.com/kugelilizibuwum/lakopojeruvizipimelaz.pdf
    • https://s3.amazonaws.com/xukirizugukugi/senujesikoji.pdf
    • https://uploads.strikinglycdn.com/files/120bc638-169c-461d-8426-5a49d2dfe1c7/watch_romeo_and_juliet_1996_online_free_123.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_off0000d525.bin
a378eed53b4689040a52c913d2a6db97313e8d85777d5654fa461d93258575d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD525 5276 bytes
font_01_sfnt_off0000e723.bin
3dff51ad593edf96e564bb3eacfb70c3f0143d9e19cf2a88dc41a77aae7bce45
pdf-font-stream PDF embedded font (sfnt) at offset 0xE723 11744 bytes