Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5a0dda6b26cfc40…

MALICIOUS

PDF

78.6 KB Created: 2021-03-23 21:23:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8844ff3205061f1b09f70a18f4cd6092 SHA-1: c6f97d0ec2c20fd570a3d4aa658d8786d984ae44 SHA-256: a5a0dda6b26cfc4065f4dfa0b6408e7528e885c9d409edce31f7065011946054
96 Risk Score

Malware Insights

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

The file is a PDF containing obfuscated text and multiple embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://druttle.ru/aws?utm_term=phd+research+proposal+sample+political+science PDF link annotation
    • https://cdn.sqhk.co/bulixanejad/lg3jaer/jinisujobusoliruxitabe.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/black_and_decker_jigsaw.pdfIn PDF document text
    • https://cdn.sqhk.co/segidexu/gjfHgj7/81704084696.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/hgiggi6/topid.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/QAid8NX/jitijit.pdfIn PDF document text
    • http://dipenoguzel.sportsontheweb.net/divipuzokimitatanowuvatep.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/lhAFdpP/separate_to_pages.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/QAgfAha/bee_factory_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/hfDCaZL/fox_news_live_stream_free_debate_tonight.pdfIn PDF document text
    • http://bibivire.mygamesonline.org/61982680787.pdfIn PDF document text
    • https://cdn.sqhk.co/vosizijanad/eQpujdN/bitilomerilalosilit.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
    • https://s3.amazonaws.com/xijilesuzuxo/niweguzaget.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/228c1416-0a40-49c4-ad3d-34b55acf45f3/kunalemilup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d8f7932-5f61-4557-a3d5-c13bdab6c860/mesezavupoxirota.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/27066839477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c8d7c2-97ca-46f5-ae3c-5b73a98f658a/tekonsha_prodigy_p2_brake_controller_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba7ca076-1a83-4696-a65d-ae2cbb1089cf/gabavanomesop.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/74030234168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a541fcc4-5241-489a-99c4-e152b414cc2e/reverse_image_search_google_mobile_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35892a38-d892-4c39-aaee-421d4ccb01ca/8437938791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9b0002a-9946-4ba7-b15d-2a9db620c77c/dakidovagegividimatiw.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/zisirubedogugozinurevawik.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/black_and_decker_hedge_trimmer_replacement_blades.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0a2515-11d0-414c-9ef2-07c5dea1f98e/how_to_manually_light_char_broil_infrared_grill.pdfIn PDF document text
    • http://cep.rhul.ac.uk/cep-blog/2016/1/29/royal-holloway-student-project-reveals-daIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95A 5100 bytes
SHA-256: 716d7cf9c8f1eaf8f431b4e9f6183981ee788daf81210957dc6c83f13c292261
font_01_sfnt_off0000fa7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7B 10664 bytes
SHA-256: e973fa989645e42df445eeb1d177ca0a7535450d4a86029da2803124472224f4
font_02_sfnt_off00011eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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