Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02e98214e5c28a9…

MALICIOUS

PDF

76.5 KB Created: 2021-05-12 01:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1ebfa8b670cf351975c500656e83271 SHA-1: 9908d69da90f48e9d51970df7c99fd2e8692eeb7 SHA-256: a02e98214e5c28a92112b2f9e1c4630884808e6635134cc7e3ccf85388c4f659
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, and ClamAV detection confirms it as malicious. The document body, though heavily obfuscated, suggests a lure related to resetting an alarm code. The presence of embedded URLs and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/strik?utm_term=how+to+reset+a+dsc+alarm+code
    • http://japarof.mywebcommunity.org/dolexonopi.pdf
    • https://sosuxivi.weebly.com/uploads/1/3/6/0/136056733/vomaxe.pdf
    • http://gamedv.design/lg_ductless_mini_split_air_conditioner_reviewsmj4u5.pdf
    • http://reduslim-official.website/gilamizuwage3ko2l.pdf
    • https://mumasibomogavap.weebly.com/uploads/1/3/1/0/131070301/pinapenakil.pdf
    • http://devlp.club/joterukavunurafuxawumaslfqe.pdf
    • https://jenodefutufute.weebly.com/uploads/1/3/4/3/134373351/jozipobuf.pdf
    • http://gojovujewinunuj.mygamesonline.org/zegulipiwozegini.pdf
    • https://cdn.sqhk.co/ravusigi/fkjhiTp/76333090971.pdf
    • https://cdn.sqhk.co/noneniwetav/giyhapX/79970267322.pdf
    • http://dufazesiz.mywebcommunity.org/administrao_financeira_e_oramentria_estrategia_concursos.pdf
    • https://cdn.sqhk.co/dikizumi/hdSunjb/advertising_sales_manager_job_description.pdf
    • https://zelelifejoba.weebly.com/uploads/1/3/4/3/134321633/wuporivut.pdf
    • https://pusenosate.weebly.com/uploads/1/3/5/3/135347115/remoronitosusa_bimetikidofowej.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nalifij/presentation_formats_for_students.pdf
    • https://s3.amazonaws.com/megodipewukitoj/sakupulugokanunasomuzer.pdf
    • https://s3.amazonaws.com/kujapomib/75361151830.pdf
    • https://s3.amazonaws.com/gurupixabogivaz/mivopibigiwudarezozujota.pdf
    • https://s3.amazonaws.com/baposivarabuj/america_history_of_our_nation_online_textbook.pdf
    • https://s3.amazonaws.com/fazujo/buzufurodatuforubuluwa.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_off0000ebe1.bin
9dcc6bd13225345773e901c7f35e6afcdf3f92f95f48f301293695cab196e36c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE1 5140 bytes
font_01_sfnt_off0000fd51.bin
d04a9213008e04bb888696ba68666a7aade8686d9c8a66c13ddd8bc315d7b621
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD51 11548 bytes