Malicious PDF — malware analysis report

Static analysis result for SHA-256 c231a5270963b568…

MALICIOUS

PDF

78.6 KB Created: 2021-03-28 20:38:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ca5af81dd9ea0493c65e3c714a987a2 SHA-1: 6c8601c4366a149a669bc374496910c385800462 SHA-256: c231a5270963b56851b68c523aa6e06e3f1bfe54b2cd6c69ef315545113619a4
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, contains text related to 'swype apk download', suggesting a phishing or malware distribution lure. The embedded URL 'https://maypoin.ru/wix?keyword=swype+apk+download' is the primary indicator of this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://maypoin.ru/wix?keyword=swype+apk+download
    • http://gmetry.online/roomba_960_battery_charging7bsqa.pdf
    • http://csxmoney.info/how_big_does_a_mini_long_haired_dachshund_getjh3ge.pdf
    • https://cdn-cms.f-static.net/uploads/4451551/normal_600a90ebeba5c.pdf
    • http://pokupka.space/nowumogilinanej90upa.pdf
    • http://jiwapadenejeza.getenjoyment.net/the_ravenous_pig_brunch_menu.pdf
    • https://cdn-cms.f-static.net/uploads/4465015/normal_5fd2733670743.pdf
    • http://furniture21.online/how_long_does_green_egg_charcoal_last1mgnc.pdf
    • http://com-signto6.xyz/book_synopsis_the_woman_in_cabin_10pzjzd.pdf
    • http://inostrana.com/wubalaxelovonapewopewapidbg3lo.pdf
    • http://elinekici.online/bosagiporafopewikvd9r.pdf
    • http://insta-sale.site/maxiscan_ms300_says_link_error9vxkn.pdf
    • https://cdn-cms.f-static.net/uploads/4368982/normal_5fe94126b8550.pdf
    • http://fc-aromat.ru/974346929420ugr2.pdf
    • http://cmbclientes.com/where_to_learn_korean_for_free7r4i3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_b7f4747734994e1380f86b7d584f609f.pdf?index=true
    • https://43466d02-873c-4564-b63c-f2f79aa6d38e.filesusr.com/ugd/fd64e8_f01dc91e087144159df07260189782de.pdf?index=true
    • http://vilepobafomunow.atwebpages.com/what_should_i_write_in_performance_appraisal_example.pdf
    • https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_6db3df76cdd6464ba8a0e6525bfaabed.pdf?index=true
    • https://s3.amazonaws.com/dekogamik/4737782348.pdf
    • https://s3.amazonaws.com/pegebunov/78720832764.pdf
    • https://c4a5d104-04f9-44e6-b03f-1f5edac3680f.filesusr.com/ugd/f23921_9a83a8f95065426281cfccaf9b8f45b3.pdf?index=true
    • https://s3.amazonaws.com/gotenukevepunin/catriona_gray_miss_universe_performance.pdf
    • https://s3.amazonaws.com/gelawiweza/logarithm_aptitude_questions_and_answers.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_off0000f5df.bin
fb649e2bb1269d89a119f8e407733cff935f4019a94c42acc3ccb5a83d48f893		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DF 5040 bytes
font_01_sfnt_off00010737.bin
65fe7eceaccdd3b2494be9e245ad03fc6f478f529d8d39216d988aa9d369315b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10737 10736 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.