Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4df639acc3b34c…

MALICIOUS

PDF

122.8 KB Created: 2021-03-23 15:09:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c32b1580f65ebddb92ea10c5364d2f18 SHA-1: 29e4fa2e041112ed4e3bc22db21920cc518e681a SHA-256: 3a4df639acc3b34cf6910c3e5fe4834c3ce9112c0c4d2341dfac833532120308
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to a suspicious domain likely used for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to "2019 all movies tamil hd", suggesting a lure to attract users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/123?utm_term=2019+all+movies+tamil+hd
    • https://cdn.sqhk.co/vowibesep/fKJibcC/cup_stacking_song_pitch_perfect.pdf
    • http://streamsweets.com/easy_ice_cream_recipe_without_machinellas2.pdf
    • https://cdn.sqhk.co/kopilixa/gZnhcwK/minecraft_exploration_mods_1._12._2.pdf
    • http://mon-compte-cmb.best/tft_set_4_warlord_spatulaaiucc.pdf
    • http://sreda.city/pioneer_avh-200bt_manualhly26.pdf
    • https://cdn.sqhk.co/jezaziritav/hahcGia/tosok.pdf
    • http://kmplitka.shop/survivalcraft_2_download_pc9eiux.pdf
    • http://jobauthor.online/gokoterixivghunj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://920f4c01-5fd6-4c40-8b27-b99972fecb60.filesusr.com/ugd/d63aaf_dc423f1cccc64399afb963a597728ed4.pdf?index=true
    • https://d1b33a7b-cde1-45d4-bc15-d4d3b6236ac5.filesusr.com/ugd/1d64af_e6fcc2670069423e9415707f6279f9fc.pdf?index=true
    • https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_9cd1183cc4ed42078020b9ca5ca304c2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/07422f7f-b19e-421c-8c59-e28b06faf95e/juxokejemosesovubiwida.pdf
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_3557a3fb5f72469ba0d20b91706e8d61.pdf?index=true
    • https://uploads.strikinglycdn.com/files/89d5fe11-de76-4cf6-b662-1fd9df9a69a5/who_won_sexiest_man_alive_2015.pdf
    • https://uploads.strikinglycdn.com/files/5b8f0202-d795-4d07-95ae-951d932ac820/how_to_change_the_battery_in_a_harmony_remote.pdf
    • https://uploads.strikinglycdn.com/files/b5460601-ab4f-4130-8ffb-5c09ddb903e7/wii_u_console_for_sale_near_me.pdf
    • https://uploads.strikinglycdn.com/files/4da8029f-bb4a-494d-9852-cc55abfccc61/satomasomazifageguvotep.pdf
    • https://uploads.strikinglycdn.com/files/09741b1d-041f-4f6b-af2b-259ba10fa150/wunusoxubira.pdf
    • https://bb209e34-24c3-4901-88bd-c00af8cda710.filesusr.com/ugd/de6798_e3f88dcc1d174f0ab13ddbea72d36152.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3fdf2edc-a8cc-4fa2-ae5e-20f2859464de/settlers_of_catan_card_size.pdf
    • https://uploads.strikinglycdn.com/files/fb760824-3692-4b0b-9f24-78a9f1708836/how_to_study_physiology_in_medical_school_reddit.pdf
    • https://dcc20dec-0195-4543-b617-cfb82efd15f0.filesusr.com/ugd/30ea26_a717c7d8a25148f1990b3dcc7225724f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6b80a875-7ae6-4e33-8fa7-18866d4680ec/gibatuw.pdf
    • https://uploads.strikinglycdn.com/files/45273c01-d5bf-4c35-af26-94e89eaddfe2/panasonic_kx-tga939t_belt_clip.pdf
    • https://7fd92c66-d3af-485c-b7a9-31529ddfb1b5.filesusr.com/ugd/997d0f_ba186c368a2a445ea4c6357e9c990fea.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017798.bin
61c34180ec4a10c492ac3cde577902d5a8e9c12e2a77109be907578c6969959d
pdf-font-stream PDF embedded font (sfnt) at offset 0x17798 5416 bytes
font_01_sfnt_off000189de.bin
d1d7f97ecb14f999f857a2b0b08ba4ad45d4691a9c0ced98cf08e982ed6a6966
pdf-font-stream PDF embedded font (sfnt) at offset 0x189DE 6664 bytes
font_02_sfnt_off00019eef.bin
49c92116c879d2072cba346d624f9bae5eadfc260d9377922b301691f82147ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x19EEF 11888 bytes
font_03_sfnt_off0001c7a5.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1C7A5 16164 bytes