Malicious PDF — malware analysis report

Static analysis result for SHA-256 0feefe2219a72c87…

MALICIOUS

PDF

46.7 KB Created: 2020-10-04 22:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 065b7a9e325de713f0753aaea75017dd SHA-1: 90d58cebb29bf40e960ad0abb481c762450c599e SHA-256: 0feefe2219a72c873d7b5d2029a9a08607dc9526df1abb8b09aa25601095f69f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with heuristics indicating it's a link farm and redirects to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest an attempt to direct users to malicious content, potentially for phishing or malware distribution.

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://gettraff.ru/pify?keyword=modelo+carta+poder+mexico In PDF document text
    • http://files.kenyaultimate.com/uploads/1/3/0/7/130776886/e8da2c.pdfIn PDF document text
    • http://files.erathcountyhabitatforhumanity.org/uploads/1/3/2/6/132695416/gipaponikojazuvaxa.pdfIn PDF document text
    • http://bifegofet.fitnessnco.com/uploads/1/3/0/9/130969192/9492520.pdfIn PDF document text
    • https://site-1037241.mozfiles.com/files/1037241/86113652880.pdfIn PDF document text
    • https://site-1036656.mozfiles.com/files/1036656/wipofotob.pdfIn PDF document text
    • https://site-1036644.mozfiles.com/files/1036644/31314499582.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/1/0434/3191/9765/files/lotitivuxejuzemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6993/1172/files/grub_rescue_commands_for_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4522/3581/files/proceso_de_manufactura_del_papel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/section_8_inspection_checklist_nyc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3888/files/the_lesson_by_toni_cade_bambara_setting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0910167-8afd-4bcd-8c54-e4b046cc8254/jelonar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57dedb0b-7f0e-4484-9593-b7c627a2f269/95763475596.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_off00006ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFC 5116 bytes
SHA-256: 745a51bb37cf0c22297091437628987ad578319a53e786c7401255959ecb0662
font_01_sfnt_off00008155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8155 1636 bytes
SHA-256: bfba50ad4feeef2c19d4e06de581bdd1d0139814ede4844fc3850d755643d398
font_02_sfnt_off0000898e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898E 10572 bytes
SHA-256: fa282af55e7a3ecc08c2886530a223da098a616c9eaf1cb14526718ee6046dcc

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