Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c59569b38d0b66…

MALICIOUS

PDF

63.5 KB Created: 2020-12-06 00:10:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1581d24a4eef8ab07d5b98dcf769c9b2 SHA-1: e2a22a48a5c8c61ad0cc8e8cc9f72a925d24ca81 SHA-256: 70c59569b38d0b6600bc9fb546f75b98fba787c8732b813ad6bbaa5dba169709
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting services, and uses a deceptive title ('Mushaf al quran pdf free') to appear legitimate. The ML classifier strongly indicates maliciousness. The primary purpose appears to be SEO manipulation or directing users to potentially malicious content hosted on external sites, rather than delivering a direct payload within the PDF itself.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/aws?utm_term=mushaf+al+quran+pdf+free PDF link annotation
    • https://jinezosibe.weebly.com/uploads/1/3/4/4/134454760/910693.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/nugepukuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426810/normal_5fa7376a19eb8.pdfIn PDF document text
    • https://fotobuwab.weebly.com/uploads/1/3/4/3/134368258/5950362.pdfIn PDF document text
    • https://bemazinava.weebly.com/uploads/1/3/4/8/134890863/merozupudij-fojegobedepaxe.pdfIn PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/7b240f806648e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe4f4df-3959-48bd-b5ea-bbcfe2477ffd/13044244054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/603d6b57-d499-4b96-8a87-cb780f0e5228/41338043300.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e8580a2757459be2e8d5/t/5fc5dc74f81c9a2a0c6e84c9/1606802549792/pakumuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b73f69d-a8a6-4ee8-a314-f7cbabe78121/fast_times_at_ridgemont_high_shirt_target.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/business_plan_template_for_hair_products.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf6052c6de34c7a38362c/1606219277891/vizuwujavanoku.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_off0000bad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAD0 5260 bytes
SHA-256: 827bd228d4c080607658ca2a0985895cc1a4d5ba3422ed5cafb60a2380e792c4
font_01_sfnt_off0000ccb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB5 10800 bytes
SHA-256: 73f522abc61620b2300e2eb63f692767aea1c5d076a6255f75d270c77e36bad2