Malicious PDF — malware analysis report

Static analysis result for SHA-256 e34b63c4bd8255c5…

MALICIOUS

PDF

47.5 KB Created: 2020-10-02 23:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 00da8d77471545e5d43a55313044da80 SHA-1: 62aa40ae29c81417065c0f8d5014efc5257da1fa SHA-256: e34b63c4bd8255c56674b1b89120b9455636092eda3aad639c360c545816f1cc
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to known malicious redirector infrastructure or link farms. The document body, though heavily obfuscated, contains references to 'Africa cup of nations 2019 pdf' and URLs that are likely intended to trick users into visiting malicious sites. The ML classifier also strongly indicated maliciousness.

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://cctraff.ru/strik?keyword=africa+cup+of+nations+2019+pdf In PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/tupagisagis.pdfIn PDF document text
    • https://site-1036975.mozfiles.com/files/1036975/bubexad.pdfIn PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/zipafajasowuwalapi.pdfIn PDF document text
    • https://site-1039922.mozfiles.com/files/1039922/42979248632.pdfIn PDF document text
    • https://site-1039817.mozfiles.com/files/1039817/mewox.pdfIn PDF document text
    • http://files.drivingyourdream.com/uploads/1/3/2/7/132710563/boxobobasagiwidizu.pdfIn PDF document text
    • http://files.rioxpvista.com/uploads/1/3/1/6/131637034/36c763c9765.pdfIn PDF document text
    • https://site-1038338.mozfiles.com/files/1038338/72312543376.pdfIn PDF document text
    • https://site-1036852.mozfiles.com/files/1036852/21230549814.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/1/0478/9990/2118/files/futopowedunowum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5261/5830/files/finding_empirical_formula_from_percent_composition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2994/8572/files/67051031896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1789/4050/files/90713717301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0891/3319/files/makodu.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_off0000665a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 5588 bytes
SHA-256: e4fdf699252714a68150f194b39307b7034f5b4ff7783159749b527c40e49891
font_01_sfnt_off00007969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7969 10260 bytes
SHA-256: 99e26094671ed18121b50e852ecb691a3706e08c67ca9dc29492846db621e0d1
font_02_sfnt_off0000886c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886C 12628 bytes
SHA-256: b43c2d522bd0641773da11b219d42a0fa82920fcdb3c5a8324a341a8bd81ebb1

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