Malicious PDF — malware analysis report

Static analysis result for SHA-256 17146daa68a7ab9d…

MALICIOUS

PDF

41.1 KB Created: 2020-10-07 01:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9c517029306b64f96e1390d663566b81 SHA-1: 7ce6808f0b91ca29108f1c72df9a3ba813a89e64 SHA-256: 17146daa68a7ab9d58e0cbd8c9bd2a33a30681a9d48ecaa638262faef2125ec8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'casio edifice sapphire manual' and the malicious URL. This suggests a phishing or scam attempt where users are directed to malicious infrastructure under the guise of providing information.

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://ggtraff.ru/strik?keyword=casio+edifice+sapphire+manual In PDF document text
    • http://files.akidsplace-huntingburg.org/uploads/1/3/1/3/131384643/xawivufasipinameve.pdfIn PDF document text
    • http://files.gallimoregirlsphotography.com/uploads/1/3/0/7/130739779/2982419.pdfIn PDF document text
    • http://files.amcirealestate.com/uploads/1/3/2/6/132683000/e6da992e2f94.pdfIn PDF document text
    • http://files.alhamptonchapel.org/uploads/1/3/1/4/131455158/vozulol.pdfIn PDF document text
    • http://files.cbdreleafcenterprovidence.com/uploads/1/3/1/4/131411688/vavezolumin.pdfIn PDF document text
    • https://site-1036633.mozfiles.com/files/1036633/memigogakositokevef.pdfIn PDF document text
    • https://site-1037048.mozfiles.com/files/1037048/ruvolow.pdfIn PDF document text
    • https://site-1040567.mozfiles.com/files/1040567/balotonaxelememade.pdfIn PDF document text
    • https://site-1039602.mozfiles.com/files/1039602/96399442301.pdfIn PDF document text
    • https://site-1040032.mozfiles.com/files/1040032/56659825977.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/1/0436/6660/4182/files/haynes_chinese_scooter_service__repair_manual_4768_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6546/6270/files/auto_body_spray_painting_tips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6505/files/95139701755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3679/7859/files/vezenanilisinewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b9d2cb-a8a0-479e-90e4-b210c914cf32/44275350945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33760ce0-425a-4279-bf3f-923b37fcef6f/57798512625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5b8d87-798a-45d4-ba66-d9353a97c600/34019231412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5766c5a3-68b1-49dd-825f-25d291074d4b/45171902258.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_off000063f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F1 5300 bytes
SHA-256: 5dd0fee389fcfb683b0d51e69d0166bff229c5c4643cc2f05d58d1e0e68d8d79
font_01_sfnt_off000075c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C9 9848 bytes
SHA-256: ded278a4b635a22e13f57f531b3ab86f4349882977272d52dfd41f8cabfa7b5c

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