Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bcccff4026f724d…

MALICIOUS

PDF

66.8 KB Created: 2020-10-26 19:44:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8fee9d902ddce4bb8a0199ad7da36ca8 SHA-1: b8ac09926e4363aa7d441b12db248af4e9d2e779 SHA-256: 6bcccff4026f724dbd2cce7de71cde4c437648c4e5de2fb64c7ec05c91603f4a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ttraff.ru/pify?keyword=mr+llama+sc+kylie In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f8fadd9de620.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405208/normal_5f95d1d5eca0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5f8c8fa5610f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5f958acd8c01c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383930/normal_5f8e24262b38b.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/felasorarabipis/breeding_management_of_sheep_and_goat.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/jumazokanufivatolod.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/referat_meningoencephalitis.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/handbook_of_climate_change_mitigation_and_adaptation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8160/0676/files/91510427609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9373/1744/files/14764059668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/kifex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2775/8763/files/ex_love_back_astrologer_in_mumbai.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/reading_street_4th_grade_spelling_words.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/probability_sampling_methods_with_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0088b6f3-e859-4e5f-b3dd-d4f585f25cf6/44195263689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec7fdd0d-6dbe-44fc-99b0-104b4eccada4/ligebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dd3d7c9-edfc-4049-a1cf-26ac6c56168a/wetewevatezevutapedof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34ce2382-cb00-4181-aff5-0c5c6aa17a8f/25491457080.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_off0000ae42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE42 5116 bytes
SHA-256: 0896f7a1f905329425d57c661648ca820daf0ee85282668adc58f3e00d27b44d
font_01_sfnt_off0000bfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA0 12456 bytes
SHA-256: 674ae901638949cddcee4470547fed1322e26b727f02be5113d3086df984b7f7
font_02_sfnt_off0000e941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE941 16080 bytes
SHA-256: f81419de8a1ced9bc85b1911f03ff6a850ee9f679b570d3722bb5b4969eb4a15

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