Malicious PDF — malware analysis report

Static analysis result for SHA-256 cafeccfee72ad1bb…

MALICIOUS

PDF

83.9 KB Created: 2021-02-14 17:27:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c2b1c0548e5a6180a005fbf93f976794 SHA-1: 2116056d336434a1afbccef0c7ec929e93942fce SHA-256: cafeccfee72ad1bbb74f8aa14006728d33387029594f27ef9b172c16c185594c
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO poisoning and phishing, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing or malware distribution scheme, likely leveraging a link farm to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://maypoin.ru/wix?keyword=gradpoint+answers+english+3 PDF link annotation
    • https://levavepisemewo.weebly.com/uploads/1/3/5/3/135303450/nisawaratagi.pdfIn PDF document text
    • http://donbetosstreettacos.com/carlos_castaneda_the_art_of_dreamingd3wse.pdfIn PDF document text
    • http://new-leggins.site/1474062984339562.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/nEhjoor/81993199442.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/ehh7h3r/input_rounded_corners_bootstrap.pdfIn PDF document text
    • http://zodoworusa.22web.org/umc_liturgical_calendar_2018.pdfIn PDF document text
    • https://zesadokalefon.weebly.com/uploads/1/3/2/6/132681767/7934445.pdfIn PDF document text
    • http://titoto.xyz/srimad_bhagavad_gita_odia_downloadhowgg.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/chigr5z/kijupuv.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/iihg6C8/dominos_birthday_party_package_price_list.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/liluvad/adorno_books.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/bon_appetit_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/67698349685.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/426994717.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/97655979721.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/yangzijiang_shipbuilding_annual_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/minecraft_witchery_starting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/7888831790.pdfIn PDF document text
    • http://vibufek.epizy.com/64631079403.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/80572143653.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF01 5296 bytes
SHA-256: 4f384f6b5feb99037e6bba03b7afa33c61f3c98a7ecdc2464590c684094fb456
font_01_sfnt_off00011113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11113 10332 bytes
SHA-256: 886f467a2bbb01c17aecf032e98923fc2472ca43e74b3e516da0e1f64d0264c8
font_02_sfnt_off00013475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13475 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.