Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f388bb599764dd…

MALICIOUS

PDF

77.3 KB Created: 2021-05-09 13:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 94fe8827c21b06d7d61f026adfc7787e SHA-1: 2e26c68944af60d9b68f24b21d7ca429ade71777 SHA-256: d6f388bb599764dd95e037b38b25f2dc4bea2c1bd6170688368dc740ee0b31d3
134 Risk Score

Malware Insights

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

The PDF document, disguised as a guide for scanning from Canon to Mac, contains numerous external links, many hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading a malicious payload via one of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://golowaki.ru/strik?utm_term=how+to+scan+from+canon+to+mac PDF link annotation
    • http://fawikenaxalu.scienceontheweb.net/54667491342.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426971/normal_60370160bda92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469634/normal_5feb7861b993e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424025/normal_5ffd11df4635b.pdfIn PDF document text
    • http://the-english-temple.com/diablo_2_hero_editor_1.14_d_downloadb3kij.pdfIn PDF document text
    • http://sisonigoban.iblogger.org/tally_accounting_tutorial_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504839/normal_5fcfa5e91a7fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_605a8cbc6226b.pdfIn PDF document text
    • http://ranomurivokav.22web.org/jezetekifufi.pdfIn PDF document text
    • http://siwupezomejen.getenjoyment.net/form_4473_question_11_facebook.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/test_de_los_cinco_lenguajes_del_amorgeex1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab32e98-0064-49cc-8dd8-40ceeefc8608/65537836885.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/43053164886.pdfIn PDF document text
    • http://buviwama.epizy.com/1289455438.pdfIn PDF document text
    • http://jopavufugas.epizy.com/xetivotazekovug.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/21040581288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/314dff11-381c-40d9-8035-69c881f002a2/totomanuzuba.pdfIn PDF document text
    • http://fotopozivami.epizy.com/66567299231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb8b9c0b-0838-4b65-a81f-07be1aa20c5a/how_do_you_cite_an_unpublished_case.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e90dd9d3-7056-4cd1-a286-6152d810615c/27403067419.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/sojadovibusap.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_off0000f109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF109 5048 bytes
SHA-256: 534f52112a9410a47a26ed84a0106014a061e8f6d04ab28438aebbdb903f19e0
font_01_sfnt_off00010233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10233 11020 bytes
SHA-256: 63afddd53103494db112a6b23cba7c9f938d51e85848e8713592fc54aef87e9d

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