Malicious PDF — malware analysis report

Static analysis result for SHA-256 265cbcf91b995fab…

MALICIOUS

PDF

77.7 KB Created: 2021-02-28 21:49:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: f9b5d2cfac448ac3e0b00c1af5f2cc66 SHA-1: 3f96fb20a5954ee1f4211d3927eaab7f21eee0a0 SHA-256: 265cbcf91b995fab2e223e5c4f55ad423f398b964f889d0ed5f91fc712d5d8ef
126 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, identified as a phishing attempt by ClamAV and an ML classifier. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to a malicious website. No scripts were extracted, but the PDF structure and embedded URI indicate a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/wix?keyword=where+is+bikini+bottom+museum PDF link annotation
    • https://fiwigerisen.weebly.com/uploads/1/3/1/4/131408459/90f879033aa40c.pdfIn PDF document text
    • http://muritolovaj.iblogger.org/statista_e_commerce_report_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tezakagadol/gtAheid/stachys_byzantina_silver_carpet_seeds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369496/normal_5fcf750ee6b79.pdfIn PDF document text
    • http://arnautmebel.ru/65087591310yz6pm.pdfIn PDF document text
    • http://datab.vip/leer_el_talmud_en_espaolmevz7.pdfIn PDF document text
    • https://kezamipi.weebly.com/uploads/1/3/0/8/130873984/e7e5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407084/normal_6008055201c6d.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/1921413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_603151097361f.pdfIn PDF document text
    • http://wejnpowk.space/how_to_check_pandemic_ebt_balanceusnl5.pdfIn PDF document text
    • http://jevopapivixepe.iblogger.org/bododimurofukivibubowike.pdfIn PDF document text
    • https://fiwofufoneronup.weebly.com/uploads/1/3/1/0/131071066/bowudapoj_xeguguxosad_jetekabukag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fc6bd8883ed4.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/wuzalugiseto/automatic_call_recorder_apk_for_jio_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/searchview_in_fragment_android_example.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/bio_poem_template_for_fourth_grade.pdfIn PDF document text
    • http://wazuvit.rf.gd/figejegubepud.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/creo_parametric_2._0_free_for_mac.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_off0000e713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE713 4780 bytes
SHA-256: e5678e3745a94d9d672d41ce81e8d596c95ccaa45107c2f60777eb51dbabe73e
font_01_sfnt_off0000f72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72D 10728 bytes
SHA-256: a15259e3c41c4a98b7730ca00a0d1ecfb41f9e5b4d7489f106e70185313de4ad
font_02_sfnt_off00011ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA0 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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