Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3856be30486577d…

MALICIOUS

PDF

74.1 KB Created: 2021-03-20 14:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f38827986eef2e2eabb60e66d34c79f SHA-1: 2ed0c3d9856cef757dcbcc9129b2267f5073ab63 SHA-256: a3856be30486577d9aa490cec46398c60bf67a3c58ac249f3c3cd07913617600
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a malicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/wix?keyword=murray+avenue+school+larchmont+ny
    • https://cdn.sqhk.co/jujirepak/jeyZKjh/fluxx_fx3_led_hoverboard_ul2272_reviews.pdf
    • https://cdn.sqhk.co/kigoxeni/aibvhdq/mivadagujebamevawi.pdf
    • https://cdn.sqhk.co/gejupajo/ieCIigf/22040571628.pdf
    • http://odebayitrafikhizmeti.com/lasexiduvula26hip.pdf
    • https://cdn.sqhk.co/doburazax/eB4Nvja/easy_cursive_handwriting_worksheets.pdf
    • https://cdn.sqhk.co/ripalufix/jRGtu24/2799602502.pdf
    • http://itclick.pro/menupeze61uh4.pdf
    • https://cdn.sqhk.co/godezixibufo/dhgjiMI/subeputigupade.pdf
    • https://cdn.sqhk.co/bitowiso/aUuLtgg/luzonoweguziwazid.pdf
    • https://cdn-cms.f-static.net/uploads/4450884/normal_6035c7a768f2b.pdf
    • http://bukenisefino.mygamesonline.org/social_connectedness_theory.pdf
    • http://eurofamily.pro/bexebilazotiux6h.pdf
    • http://xevojifixifepi.scienceontheweb.net/talowojivimimagokudaja.pdf
    • https://cdn.sqhk.co/gulanuwe/KLggdhj/zexikufiguzuj.pdf
    • https://cdn-cms.f-static.net/uploads/4446283/normal_6048a149b81e2.pdf
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5fecd31f606fe.pdf
    • https://static.s123-cdn-static.com/uploads/4414515/normal_5ffb67656d23a.pdf
    • http://walkover.me/cosatu_policies_and_political_affiliationsa1bny.pdf
    • https://cdn.sqhk.co/netesatova/gchaBic/99028076466.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://donijexufenu.onlinewebshop.net/how_do_i_know_what_size_kenmore_refrigerator_i_have.pdf
    • http://tarepos.onlinewebshop.net/16838533048.pdf
    • http://kopolug.myartsonline.com/what_type_of_government_controlled_the_soviet_union.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_off0000e26f.bin
ec643f2f1bd5e5ef71f0fa4fa79bc43a4100af75401d48b4555486b03ef859f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE26F 5204 bytes
font_01_sfnt_off0000f412.bin
a31291da8bf545462f16637d9ff689a88918caf8e0b4857cdd2cd248ecf23696
pdf-font-stream PDF embedded font (sfnt) at offset 0xF412 11200 bytes