Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9b038fea47c55eb…

MALICIOUS

PDF

37.8 KB Created: 2020-10-10 19:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d65e3228abdea440168e878b80787c31 SHA-1: bc5bc947c11f933c3c648f910df68a2ff2c6022c SHA-256: c9b038fea47c55eb23d737435ca49e9d63b129bfa2191822739a63f47ac710d7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/pify?keyword=ap+physics+c+released+multiple+choice In PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/jomagexe.pdfIn PDF document text
    • https://site-1038910.mozfiles.com/files/1038910/68965884402.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/wepefenuriparotegi.pdfIn PDF document text
    • https://site-1036799.mozfiles.com/files/1036799/menapu.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/91551220448.pdfIn PDF document text
    • http://files.annasaoc.com/uploads/1/3/2/7/132740954/vevakujilipekanad.pdfIn PDF document text
    • http://woxega.houstons.net/uploads/1/3/1/4/131407377/3013610.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/1/0434/4964/7271/files/zurn_wall_hydrant_rebuild_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0380/5847/files/simpsons_1_3_rule_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8035/1897/files/ottawa_county_friend_of_the_court_grand_haven_michigan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba6eb1d2-91a8-436f-aacf-5778904202ef/filetukivufemuduvoranaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71d0ac48-a9a7-4c21-a7b7-6f9414b6e9e7/mosexijoxuzaselanose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffbd3ab-8fe5-44c9-b0ab-04d1127626f7/gorofepanafiwakoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ffe4102-9f2d-45c2-96d2-f7bfb0b6178d/83045080374.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_off00005278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5278 5404 bytes
SHA-256: cdab2c2d0f9f3f8f3de17511640c4b1b3658f1d4412802221fb8db2fce0af4ab
font_01_sfnt_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 11112 bytes
SHA-256: 13c68748a07a3110f02f4ea0915458acf0724817e7bf04c26769fc3ae57d31ea

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