Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69166fd5ef40f3e…

MALICIOUS

PDF

36.1 KB Created: 2020-06-05 20:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da48f5f8868da0d658970ea490fd656e SHA-1: e03f37555f1bd7b3ad7f7ec3ffb5704e81585eaf SHA-256: b69166fd5ef40f3ebdc8cd8c9c578615d39ff2574eb2b8678eadb3f07f1798e4
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL found in the document body, http://myitworkswell.com/uploads/1/3/1/8/131872185/131872185.html#wreckfest+cheat+engine, along with many others, points to PDF files hosted on various domains. This suggests the document is part of a link farm designed to manipulate search engine results or distribute further malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://myitworkswell.com/uploads/1/3/1/8/131872185/131872185.html#wreckfest+cheat+engine
    • http://mta-sts.suzysnails.nl/uploads/1/3/0/6/130620854/takejomovubik-senimoterumodor-nizojepukoxi.pdf
    • http://mta-sts.mail.beetzme.com/uploads/1/3/0/6/130621503/698607da80f.pdf
    • http://alessandrasantiago.com/uploads/1/3/1/3/131380985/5294665.pdf
    • http://disruptivecafe.com/uploads/1/3/0/4/130483187/powedokazazidozex.pdf
    • http://gypsyjunkmichigan.com/uploads/1/3/1/4/131482881/lofokuwubetaza.pdf
    • http://ranchocactus.com/uploads/1/3/0/7/130740164/difozarazodono_foxijusa_mibageralobobe_sisalebexu.pdf
    • http://myitworkswell.com/uploads/1/3/1/8/131872185/terms.html
    • http://myitworkswell.com/uploads/1/3/1/8/131872185/dmca.html
    • http://myitworkswell.com/uploads/1/3/1/8/131872185/policy.html
    • https://gopifuwalal.files.wordpress.com/2020/06/70229032455.pdf
    • https://ropimunor400735744.files.wordpress.com/2020/06/61974372423.pdf
    • https://xudevibe.files.wordpress.com/2020/06/59580727616.pdf
    • https://jifikafaro.files.wordpress.com/2020/06/39886373429.pdf
    • https://gosigisor.files.wordpress.com/2020/06/raxozejo.pdf
    • https://zubibemofof.files.wordpress.com/2020/06/liruwuvaviperujodewam.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d8f.bin
a12fa6f322c5e229f60a5244df788eaf4fa3913a4999eee5e034741c19dc3d9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8F 11228 bytes

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