Malicious PDF — malware analysis report

Static analysis result for SHA-256 6805b5412541852f…

MALICIOUS

PDF

35.2 KB Created: 2020-10-30 07:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 758a90aa08948d9dde88fe8f8c454294 SHA-1: 26c011541d05e983a86e5d78d437cb115c13c308 SHA-256: 6805b5412541852f4b84028ded20a39c93df9332fa7e00e7a9509e0e5cc4bb94
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file 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 3

  • 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.
  • 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.cc/pify?keyword=pre+lab+questions+experiment+7 In PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/6467039.pdfIn PDF document text
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/nebegawete.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/1/0502/7358/3289/files/wupalorulusabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1161/1073/files/cresthill_middle_school_athletics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f717514d-c29b-40ff-a9fe-73ef110ca90f/75595170426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56f81f73-a826-4233-a0ff-6065e3f9f71f/hp_probook_6570b_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/tipomozozorude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8540/7408/files/21332154374.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/sapasax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6277a846-24f2-40e5-b426-0ca9e791f4d6/79872084273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e728e00-df92-4d5d-bec2-ccdd62beca4b/10096163629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9601/3990/files/robert_abbey_bling_chandelier_installation_instructions.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_off00004cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD7 5380 bytes
SHA-256: 09322c466aeb1ad041d9c44f27dbe769cb29c40361bbff59fc66d7211da66eee
font_01_sfnt_off00005f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F16 9740 bytes
SHA-256: 18bd9d8c32781406dcf41983720e9f5276da2620468db55fc0d6f6b0e2c6722a