Malicious PDF — malware analysis report

Static analysis result for SHA-256 84eb2d174cda216b…

MALICIOUS

PDF

91.7 KB Created: 2021-03-18 23:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 20718242cbc3743ce6e6a18e9dff10a1 SHA-1: b807e39fa9d1c7e0396a22f54261a95376d934b5 SHA-256: 84eb2d174cda216b5b9916a3d96890e78d85ee2d422e5e2b8d0764450d69de01
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded links, many pointing to disposable domains, disguised as search results for games. This suggests a phishing or scam attempt to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/123?utm_term=city+car+driving+games++for+android PDF link annotation
    • http://gosoxegekiri.mywebcommunity.org/66896396845.pdfIn PDF document text
    • https://cdn.sqhk.co/voxobidivel/hgyp7gc/wasabamosofevivabujupaxan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_60355b8e1dce5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412899/normal_602decc244ab5.pdfIn PDF document text
    • https://cdn.sqhk.co/jovojatubo/ticiidW/pearson_pte_score_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/Cqjj7ij/offroad_car_lx_online.pdfIn PDF document text
    • http://mangalvpodarok.ru/72518596949jdzda.pdfIn PDF document text
    • https://cdn.sqhk.co/devepogisog/5XghKih/mowetanejamifevuwimefor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463287/normal_6007b1ea42590.pdfIn PDF document text
    • http://nesakud.mypressonline.com/dremel_8220_manual.pdfIn PDF document text
    • http://usacreditscore.info/kefoxotowanigosikerubmvtuu.pdfIn PDF document text
    • http://autobaff.xyz/tezetijazirotiderugadonueev1o.pdfIn PDF document text
    • https://cdn.sqhk.co/zapusukajev/gifgjja/piano_app_download_pc.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/jobasidifan.pdfIn PDF document text
    • https://cdn.sqhk.co/gimovitax/do5DjdK/fun_2_person_soccer_games.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/54212167790.pdfIn PDF document text
    • http://lewinozed.atwebpages.com/advertisement_examples_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/bhakti_song_mp4_dj.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/adobe_online_editor.pdfIn PDF document text
    • http://vekemelegewimo.atwebpages.com/75862923542.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/runedelig.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/a_dolls_house_movie_1992_cast.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001276d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1276D 5376 bytes
SHA-256: 3226c48ac59b4e50b7fc9160dac0d091b8a979585dc6a0fd089c1c225d626d5b
font_01_sfnt_off000139b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139B0 12044 bytes
SHA-256: 22f44f919c8e2ed57f2dd0454423d81584c5e1da236c66ca4f5753532173168d

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