Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01bf2e63cc31066…

MALICIOUS

PDF

37.6 KB Created: 2020-04-01 18:38:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 61e48fdbcc83ae082917b5dd92f61f34 SHA-1: 79e83f20c9870bda4dad1af813afca777a6bafa6 SHA-256: b01bf2e63cc31066d9f00e7c81a605518672ab481a2ee7c43fa0f60be0e4b4c7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files on different domains. This behavior is indicative of a link farm or a phishing campaign designed to distribute malicious content or redirect users to fraudulent sites. The document body contains text related to 'Catalogo rodamientos skf online', suggesting a lure to attract users interested in industrial parts. No scripts were extracted, and the primary malicious activity appears to be the distribution of links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 http://oldkingpartners.com/uploads/1/3/1/3/131383439/131383439.html#catalogo+rodamientos+skf+online PDF link annotation
    • http://giseledamour.com/uploads/1/3/0/6/130620619/9694930.pdfIn PDF document text
    • http://kraftsnkreations.com/uploads/1/3/0/7/130738633/574937.pdfIn PDF document text
    • http://provisionmediausa.com/uploads/1/3/0/6/130622024/46e691b9674b.pdfIn PDF document text
    • http://magicalmemoriestravelcompany.net/uploads/1/3/0/6/130639812/7799879.pdfIn PDF document text
    • http://lifeisketoofficial.com/uploads/1/3/0/8/130813785/2298945.pdfIn PDF document text
    • http://techliftx.com/uploads/1/3/0/7/130739313/9084630.pdfIn PDF document text
    • http://dkmodzforum.com/uploads/1/3/0/5/130551795/sababuzoz.pdfIn PDF document text
    • http://classicbimmers.nl/uploads/1/3/0/7/130775336/f24eef671fc4.pdfIn PDF document text
    • http://idealnetworth.com/uploads/1/3/0/5/130552034/pugoja_povobuvagaka_xefegodaj_nimixas.pdfIn PDF document text
    • http://xabiaholidays.com/uploads/1/3/0/6/130639038/samopefomabivab-wudojajifani.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB5 7904 bytes
SHA-256: 8511e982eb0e50d1ea1cf4c4ce773c8c975041cb4e8ae6622e52c599eb8c8172