Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d09b0d29820ad9d…

MALICIOUS

PDF

86.3 KB Created: 2021-03-24 22:23:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 263e5e02c661cbfa0b93ab63c66d9d2a SHA-1: dfdbbb5d592361e117bcd5ec36361c0285a89995 SHA-256: 2d09b0d29820ad9deb50f10e70df34bb3b0de521e758f32f76cc96d48bb3d655
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous links, many pointing to disposable hosting, designed to act as a link farm for popular game-related search terms. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wix?keyword=coin+master+free+spin+and+coin+links+2020+realmeproducts PDF link annotation
    • https://cdn.sqhk.co/kowalaxu/hhcKWhh/59940467023.pdfIn PDF document text
    • http://vefuxeromuriwir.iblogger.org/diwepefematisukonakize.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/jaYgcja/moneygram_login_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/mubogasaven/jgY84gh/draw_feature_in_word_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470681/normal_5fd3c02e1d4d3.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/74592884160.pdfIn PDF document text
    • http://zuzavepojul.mygamesonline.org/17246848404.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501027/normal_5feb864920ab8.pdfIn PDF document text
    • http://zutelotojenexop.getenjoyment.net/wukikevub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412761/normal_601a1caaeff92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_605199c73843f.pdfIn PDF document text
    • https://cdn.sqhk.co/bezofusipow/jjPDgi9/jesut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421780/normal_604674b7ca29b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/75334275216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/538e872e-8600-48d6-a69e-430b6ea599c0/fizivobinofuv.pdfIn PDF document text
    • http://nivuzujanux.myartsonline.com/78933821405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/521f40f2-3506-412c-9e55-d0f9d6a91bf8/what_the_bleep_down_the_rabbit_hole_trailer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c9cfe77-2410-4977-9b27-3184e66b0a57/music_band_song_mp3_download.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/13315147050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0f30e1b-fc49-4a83-929c-cc4f87850a71/1280833876.pdfIn PDF document text
    • http://kafopazam.epizy.com/43594743434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91f00851-6e90-4074-afa0-7cb1917a0fc6/map_skills_worksheet_2_answer_key.pdfIn PDF document text
    • http://bivuraxut.rf.gd/spring_time_yiruma_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/55824125630.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68C 5544 bytes
SHA-256: e0558a8c931446f8fc226778d6ab59dc26bc47bda9c192bf5fdd9ae9ba014fbd
font_01_sfnt_off00010948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10948 10716 bytes
SHA-256: b067a0f34b81fc1a51beb06976a52cc1d53fc3865c8e59bfaa49667465f6fefb
font_02_sfnt_off00012d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D87 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
font_03_sfnt_off00013b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B87 3804 bytes
SHA-256: 09aef0df0c4dbb787426d146438ea5cb0d368e97f23d524164e0f67929916d1a