Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06ccfc0e83a1602…

MALICIOUS

PDF

42.2 KB Created: 2020-10-27 12:17:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c5676470dcc7104370f6e49fa54beade SHA-1: 2b0ab5b133a912a627987de9cf91130cfb420739 SHA-256: f06ccfc0e83a1602ca2812b997ff11a366f5b59a7de5b8a1d08d899e48c51830
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This indicates an attempt to direct users to harmful content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=biggest+cup+size+uk In PDF document text
    • https://kutowovazamil.weebly.com/uploads/1/3/4/3/134362820/gifetiba_rololuwiwaligag_suroledun_dudili.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/1379c011b15ad.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/bitopaweruxivel.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/bekalan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f8bff6225580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f87f5de250fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f8f988346225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_5f8e54173cbfa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9998/3524/files/31056936964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1229/1264/files/manual_update_huawei_mate_10_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9795/9837/files/ps_vita_specs_vs_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2386/8319/files/9785082799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6967/files/genesis_healthcare_employee_handbook_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8309/3910/files/house_of_usher_edgar_allan_poe.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/age_of_empires_definitive_edition_cheats.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/les_energies_renouvelables_expos.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/feluwo.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/67357889542.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/ejercicios_de_caida_libre_y_lanzamiento_vertical_resueltos.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/tutikofavarumawosatewima.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/pizafusu.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/gta_vice_city_cheats_android_download.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/baxumojevin.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_off00006820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6820 4928 bytes
SHA-256: 7603b193f270b860b5209f9cbd6899dfbd54498479d8c735b7ef98a9d2407247
font_01_sfnt_off00007910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7910 10212 bytes
SHA-256: 0d8bae89aeea397dfa5b877739a86d7b9cb0cf386d9bf0efc8e2a25c6f72abbf

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