Malicious PDF — malware analysis report

Static analysis result for SHA-256 df7e20fc6498f15b…

MALICIOUS

PDF

38.0 KB Created: 2020-03-22 12:15:02 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b5c9203dc2e9a0ab8f742ae1c3577cf9 SHA-1: 0fd31a9c3994a36dca2694548c98bbf9bf23c23d SHA-256: df7e20fc6498f15bd61b71265bed0988eda71e2ca1bcb69e90e5abf63d3c509c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, forming a link farm, which is a common tactic for distributing malware or redirecting users to malicious sites. The document body text, though partially corrupted, suggests a lure related to 'I love you' letter templates, which is likely a social engineering pretext to encourage clicks on the embedded URLs. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious link distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://kyflowernseed.com/uploads/1/3/0/6/130639542/130639542.html#molde+de+letras+para+imprimir+eu+te+amo
    • http://exxophys.com/uploads/1/3/0/7/130738822/gulubomotusawopir.pdf
    • http://marcloschiavo.com/uploads/1/3/0/7/130775252/15669d8ac3dbfe6.pdf
    • http://septiccleaningsalem.com/uploads/1/3/0/8/130813429/dipego_vifamegu_xizolox.pdf
    • http://jenkbeauty.com/uploads/1/3/0/9/130969216/5828309.pdf
    • http://makersretail.com/uploads/1/3/0/4/130488993/zipubav.pdf
    • http://shulerandsonsconstruction.com/uploads/1/3/0/6/130604530/pogutofesewalovex.pdf
    • http://sydney.awrc.org.au/uploads/1/3/0/4/130489159/papomunigiz_vozigonanabesi_kinukilag.pdf
    • http://kunalsen.org.uk/uploads/1/3/0/4/130489833/7114212.pdf
    • http://destinationland.com/uploads/1/3/0/6/130639535/buwagexixunu-pakuxedidevod.pdf
    • http://74-123-72-236.mgwnet.com/uploads/1/3/0/6/130620843/sozijor.pdf
    • http://annmicheleart.com/uploads/1/3/0/8/130814861/zixuperis.pdf
    • http://internalwebbuilder.com/uploads/1/3/0/6/130620274/9a9ef7cce1.pdf
    • http://capoeirafitbrooklyn.com/uploads/1/3/0/9/130969434/ac853e5e8e.pdf
    • http://geekandfind.com/uploads/1/3/0/7/130738607/jubujuzifotomi.pdf
    • http://baysideschoolrefusalclinic.com/uploads/1/3/0/3/130323517/1314683.pdf
    • http://favefoto.com/uploads/1/3/0/6/130621206/4588725.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_off00006c95.bin
accf02c58e614616166a8c8549af83ff6fade2af3526ce084ee63f919aa58f76
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C95 8232 bytes