Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad06660c869b19af…

MALICIOUS

PDF

73.3 KB Created: 2020-10-27 11:56:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d47118a6575ebdde4a524287b0d74ad8 SHA-1: e157ea9ca520c7ab4426ce9248ac244debbaa720 SHA-256: ad06660c869b19afad61a3b542d37f52a4a45e66d0fd73b534bbbf714dfe5f24
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links, with one critical heuristic identifying it as a malicious redirector pointing to 'https://cctraff.ru/strik?keyword=excel+macros+for+dummies+pdf'. Another heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute further malicious content. The document body, though heavily obfuscated, contains text related to 'Excel macros for dummies pdf', reinforcing the lure.

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=excel+macros+for+dummies+pdf In PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/bumelokatenexi.pdfIn PDF document text
    • https://sibikobibe.weebly.com/uploads/1/3/4/0/134040949/9418842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383800/normal_5f8be83244c70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401545/normal_5f93353730a7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393220/normal_5f8f92e24ba67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_5f8b4d744295d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/leguvefu/18194374742.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/fawadeg.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/qasidah_burdah_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a9dc6b8-c60a-4ccd-bab0-489fc0be7915/36927637428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60269a1f-4c7f-4250-b40e-c1f882a04a9f/51397684054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4d83dde-0de1-4926-9765-d4f7cacb3de3/mapalegipopejitixew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3de64b0f-0d9a-4c90-9758-957a0d2194ce/munafevadawifipovamaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bf17b59-4783-4f7c-b8a5-6d78c98a6f5f/nodedazeditupebe.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/mipapiwibejabukemexodosa.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/bitimusakujo.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/hymenolepis_nana_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/a_comparative_grammar_of_south_african_languages.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/focus_physical_science_grade_11.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/cutaneous_leishmania.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/12523949711.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B6 5328 bytes
SHA-256: eba88a2bb3ebf6e3a21ff4dcf6358e8cf44eafd5d44e3d7171d6f3d30b001440
font_01_sfnt_off0000d5b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B4 13456 bytes
SHA-256: a36e0e707c4884f7142e0405a35f9fa33a08ffd1d9c57dd1685b81027131ec56
font_02_sfnt_off000101d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D7 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

Open this report in the interactive analyzer, or submit your own file for analysis.