Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5bddec348e29b89…

MALICIOUS

PDF

48.7 KB Created: 2020-11-07 03:54:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 09a86eb13f277fb5bc55172f2f63a83b SHA-1: ded07a2d8b1f3666382f7d82fd6908471928ba56 SHA-256: c5bddec348e29b89c9b3c9eaf5168b6a00cbb96fe0dfd442a1e6cb14432d6b09
124 Risk Score

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 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://traffking.ru/aws?keyword=every+tools+a+hammer+pdf In PDF document text
    • https://kazigujexumakul.weebly.com/uploads/1/3/4/3/134320364/sanurim.pdfIn PDF document text
    • https://lokugejepotag.weebly.com/uploads/1/3/4/3/134318746/pujikekugexik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://lifabetedo.files.wordpress.com/2020/11/how_to_read_act_ffxiv.pdfIn PDF document text
    • https://gorujugiximu.files.wordpress.com/2020/11/karipevo.pdfIn PDF document text
    • https://xanafegeze.files.wordpress.com/2020/11/vewakajojajibo.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/19064480989.pdfIn PDF document text
    • https://panezij.files.wordpress.com/2020/11/modern_tkinter_for_busy_python_developers.pdfIn PDF document text
    • https://lifabetedo.files.wordpress.com/2020/11/julkakor_till_salu_online.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/public_finance_noun.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/12_spiritual_principles_of_aa.pdfIn PDF document text
    • https://tugabagu.files.wordpress.com/2020/11/nofodowore.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E6 5032 bytes
SHA-256: 5733563d7a21c8c59c65eb0b2b16c492dcc72d354b39f639f0c3788ca170e0c7
font_01_sfnt_off00008415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8415 10428 bytes
SHA-256: cbf05b487debe9bc463c48c023c5e65576c2431e4e584d9d3e14f2b8eb0ec7b8
font_02_sfnt_off0000a7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DB 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230