Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e2becea1e63178…

MALICIOUS

PDF

43.0 KB Created: 2020-10-10 22:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: abff44e15a59518c36cee5a802cbe410 SHA-1: 41042f5fefb1cd4e59f0832af283ecb692f7f753 SHA-256: 66e2becea1e63178a54087a58432b90ea00cb64dac496f86c06176da126a5ef4
124 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL designed to appear as a movie streaming service. The ML classifier strongly indicates malicious intent, and the document structure suggests it's part of a link farm designed to distribute malicious content or phish users. No scripts were extracted, but the presence of malicious redirector links is a high-confidence indicator of an attack pattern.

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://gettraff.ru/pify?keyword=divergent+2+movie+watch+online In PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/vavodakuwojoboj.pdfIn PDF document text
    • https://site-1043884.mozfiles.com/files/1043884/3165133601.pdfIn PDF document text
    • https://site-1036880.mozfiles.com/files/1036880/87735482198.pdfIn PDF document text
    • https://site-1043705.mozfiles.com/files/1043705/4168180246.pdfIn PDF document text
    • https://site-1038913.mozfiles.com/files/1038913/kiranexo.pdfIn PDF document text
    • http://files.doityourselfdocumentaries.com/uploads/1/3/2/7/132740423/1718c40bfb9c.pdfIn PDF document text
    • http://files.mrsfedele.com/uploads/1/3/0/9/130969377/xutoge.pdfIn PDF document text
    • http://files.russell-evans.com/uploads/1/3/1/3/131382126/9008789.pdfIn PDF document text
    • http://seleluvi.aliveandworthy.com/uploads/1/3/1/3/131381130/d9003c7ca5863.pdfIn PDF document text
    • http://povisenun.suzannepetrizzi.com/uploads/1/3/1/4/131438741/pazoxovaleliguzilaf.pdfIn PDF document text
    • https://site-1039438.mozfiles.com/files/1039438/bugife.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/dubutemixafuvolas.pdfIn PDF document text
    • https://site-1042917.mozfiles.com/files/1042917/lomaxikezokot.pdfIn PDF document text
    • https://site-1039424.mozfiles.com/files/1039424/warosebinoxanovi.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/1/0477/5385/5132/files/38037338516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/ec_201_msu_fundamental_problem_sets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/on_november_1_eli_co.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_off000068e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E0 5320 bytes
SHA-256: e2d0d7b008cbd55aca680d91bf57d86186167f5dc066ff403e5e36459d58d612
font_01_sfnt_off00007ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE0 10592 bytes
SHA-256: 7e7e453d8450c0b60a6d3ba07e855b33ab54f8be1fa5bf0d067c8302ea4fc231

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