Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4ff7acf15012d4…

MALICIOUS

PDF

100.6 KB Created: 2021-05-14 10:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aa55057e1796b70321a265068919ef9 SHA-1: b64deb9d6612135d42eb6e0b533c58ed58614ce8 SHA-256: 0d4ff7acf15012d4a94f7f6219f3d4e77fe0946c9c68f36980206c6f7b5c15a8
104 Risk Score

Malware Insights

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

The PDF file contains a link that masquerades as a download for "fifty shades of gray songs mp3 download". This link, https://kuzutuzo.ru/strik?utm_term=fifty+shades+of+gray+songs+mp3+download, is flagged as suspicious and is likely intended to lead the user to a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9807

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/strik?utm_term=fifty+shades+of+gray+songs+mp3+download
    • https://tesebajaja.weebly.com/uploads/1/3/4/4/134402558/33a0964876a1.pdf
    • https://ramemegu.weebly.com/uploads/1/3/1/3/131383760/vavoruratamosemumuna.pdf
    • http://zipibafof.iblogger.org/4375612137.pdf
    • http://kexedeziferu.sportsontheweb.net/best_database_management_system_software_for_mac.pdf
    • http://kavelizopepi.mywebcommunity.org/projective_geometry_and_its_applications_to_computer_graphics.pdf
    • https://limazosit.weebly.com/uploads/1/3/1/3/131380555/03cb86540ab.pdf
    • http://sefomisukexalud.22web.org/43205679536.pdf
    • http://tipopajokoti.iblogger.org/mugodubewukuxituroleg.pdf
    • https://rebadezoj.weebly.com/uploads/1/3/6/0/136027304/vawumuvodubu-rerunupekosowux-libofobopafiv-tuwasefe.pdf
    • http://benilobodereji.mygamesonline.org/tiny_dancer_elton_john_piano_sheet_music.pdf
    • http://misujupino.getenjoyment.net/how_to_make_an_easy_origami_paper_airplane.pdf
    • http://rimiripa.mypressonline.com/63639520097.pdf
    • http://tezijexipilimo.getenjoyment.net/93502466606.pdf
    • https://supagerafigi.weebly.com/uploads/1/3/0/8/130874211/4275941.pdf
    • http://buwovavozu.getenjoyment.net/why_isnt_my_ps4_charger_working.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://www.daltonmaag.com/
    • http://rifukaleriduji.rf.gd/capitalism_characteristics.pdf
    • http://nowivopikuzud.epizy.com/2020_acura_mdx_service_manual.pdf
    • http://nitaremam.epizy.com/bhagavatam_telugu_book.pdf
    • http://suwuriru.onlinewebshop.net/epf_withdrawal_form_19_10c_download.pdf
    • http://jebikowi.epizy.com/pdf417_barcode_font_ttf.pdf
    • http://nigiragesowujow.epizy.com/kebijazinizap.pdf
    • http://puwokamavureme.rf.gd/22192176910.pdf
    • http://favilogas.rf.gd/47339350992.pdf
    • http://senajukuwizef.epizy.com/chhattisgarh_political_map.pdf
    • http://kokamusosimabo.rf.gd/ppt_animasi_keren_gratis.pdf
    • http://dexadusoxeb.atwebpages.com/17099263977.pdf
    • http://fufezexu.epizy.com/58725855734.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00015487.bin
1b2f88757a88fecc940fc038215e7d8e7f4802df6b697ae56a39c1bb2271b7bd
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15487 19876 bytes
font_00_sfnt_off0000f5a5.bin
985082ffa3e32edc99c7c5d61115a0c3aafae4fd65522f203d28e195a543f0df
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A5 5556 bytes
font_01_sfnt_off0001086b.bin
c160b67190b3f21411a8e43235763c892d62c6458367fb16d814275094ed2a0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1086B 2672 bytes
font_02_sfnt_off00011366.bin
ba87930f6c2d58f0778c914e2a6206d5cf76600cce441f0693af0333376f7788
pdf-font-stream PDF embedded font (sfnt) at offset 0x11366 7472 bytes
font_03_sfnt_off000127c4.bin
3dd50cb5241c285181b94feccc50a150b4ac6bd89154ae44f114b2960bc5dfd4
pdf-font-stream PDF embedded font (sfnt) at offset 0x127C4 13696 bytes
font_05_sfnt_off00017528.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x17528 4324 bytes