Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9d96d0abf17922…

MALICIOUS

PDF

78.2 KB Created: 2021-03-15 08:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dbc3c7c5b5fb934892aada662bf8ade SHA-1: 59d6909bc7c9bf115d7e565d846c259e98091307 SHA-256: 2a9d96d0abf17922a8f304e71cd9e535316b53069918b138e2d9287305a63338
164 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one specifically pointing to a URL containing 'google sites games minecraft', suggesting a lure to attract users interested in gaming. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple external links, including a 'link farm', further supports the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=google+sites+games+minecraft
    • https://gosasolana.weebly.com/uploads/1/3/4/5/134523876/dubilofamuxibebigax.pdf
    • https://cdn-cms.f-static.net/uploads/4418567/normal_6048aa0878306.pdf
    • http://losopefopamusoz.sportsontheweb.net/42400591131.pdf
    • https://cdn-cms.f-static.net/uploads/4409818/normal_602bffc5ddba4.pdf
    • https://cdn-cms.f-static.net/uploads/4387929/normal_60216e7a96ad8.pdf
    • https://zisefedid.weebly.com/uploads/1/3/4/7/134767142/jamore.pdf
    • https://soseriwu.weebly.com/uploads/1/3/4/8/134898980/3591520.pdf
    • https://static.s123-cdn-static.com/uploads/4451945/normal_5fdf9b963fe98.pdf
    • https://xitupiwe.weebly.com/uploads/1/3/4/4/134489196/703de995ee25.pdf
    • https://jerexibim.weebly.com/uploads/1/3/4/6/134654770/7390298.pdf
    • https://cdn-cms.f-static.net/uploads/4477921/normal_600d5d5f46361.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_296dcb455da244e19ad45a8ac19ddff0.pdf?index=true
    • https://s3.amazonaws.com/luropiw/how_many_pages_is_white_fang.pdf
    • https://s3.amazonaws.com/sazomo/nomenclatura_para_alcanos.pdf
    • https://a0f88182-e1f9-4a9c-ba22-d5ce004c6985.filesusr.com/ugd/2f3216_6d2ba0a1ef254f438b960dafc707bf17.pdf?index=true
    • https://a04ad255-06d6-4b17-97e7-91173d300295.filesusr.com/ugd/6864df_a74a571007834c6eae21c4849cacb35b.pdf?index=true
    • https://s3.amazonaws.com/wupuxus/what_are_the_required_tools_used_in_computer_hardware_servicing.pdf
    • https://bb4a6ffa-96d3-4132-94d3-a1d2cbc717b0.filesusr.com/ugd/0182ef_b00803efb0894d18bc41d0aba2e7a7ef.pdf?index=true
    • https://s3.amazonaws.com/petikamov/30107488722.pdf
    • https://s3.amazonaws.com/xeropizuwe/21630951030.pdf
    • https://7ae774ad-b64d-4473-a0b1-aa0db1e39e83.filesusr.com/ugd/3e7897_85533af74c344beaa1b2e86bab0fac4f.pdf?index=true
    • http://pivimufe.atwebpages.com/the_book_of_questions_pablo_neruda.pdf
    • https://s3.amazonaws.com/xoferuzu/kekisexijobopuvezif.pdf
    • https://s3.amazonaws.com/padanivozeb/gantt_diagram_template_google.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5f5.bin
f2398ec4bae35d645ea6548e6fb317aad916ed94938d5a436a579f49a3d41298		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F5 5232 bytes
font_01_sfnt_off000107b6.bin
f8c7843b2053d17636eacbe1cf05755ede7286d0688adc54bc1f916b679d035e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107B6 10596 bytes

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