Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c4af1e1206eaa86…

MALICIOUS

PDF

66.9 KB Created: 2020-05-14 06:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b13306ffe84f42dcb5196795e794d3b8 SHA-1: 7318915de11a37fc945cc58ed13332d22b284a15 SHA-256: 4c4af1e1206eaa86f4651d4016fb07a112162534c055cb8723ae1ae06cf09d35
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. This behavior is indicative of a link farm designed to manipulate search engine rankings or distribute malicious content. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://myenlighteningexperience.com/uploads/1/3/0/9/130969645/130969645.html#full+form+of+akash
    • http://jonasjewelry.online/uploads/1/3/0/7/130776481/ratewidamejo-desadadol.pdf
    • http://meter-key.com/uploads/1/3/1/6/131606118/fanazojaz-dexonuzo.pdf
    • http://227arguello.com/uploads/1/3/0/7/130739046/dizumu-tolibexiti.pdf
    • http://integrityinillinois.com/uploads/1/3/1/4/131408142/e33203c8c3.pdf
    • http://humblehomecook.com/uploads/1/3/0/4/130476496/wokemetomigojujewi.pdf
    • http://jameconsulting.net/uploads/1/3/1/4/131407067/4784065.pdf
    • http://newcommercialstorefronts.com/uploads/1/3/0/3/130379163/dab2c8.pdf
    • http://jenhall.website/uploads/1/3/0/2/130287939/nudik.pdf
    • http://sbranchconsultants.com/uploads/1/3/0/8/130874292/3520492.pdf
    • http://goingsdesignco.com/uploads/1/3/0/5/130542907/xefid.pdf
    • http://styleneelu.com/uploads/1/3/0/2/130272283/pivazonadi.pdf
    • http://usemybitcoins.com/uploads/1/3/1/1/131164176/xanibu-wuxefaloduler-xidife-judoxorope.pdf
    • http://watsonsroofingrepair.com/uploads/1/3/1/3/131384156/02cab0.pdf
    • http://seattlesearchgroupreference.com/uploads/1/3/1/6/131606339/nifunafe.pdf
    • http://associazionelucedellamisericordia.org/uploads/1/3/0/6/130603763/4988438.pdf
    • http://stitchessewingstudio.net/uploads/1/3/1/4/131454121/965019798114.pdf
    • http://63losranchitos.com/uploads/1/3/0/9/130969226/acc88.pdf
    • http://tee2greengolfclub.com/uploads/1/3/0/7/130739971/degigurob_sukol_boket.pdf
    • http://amitaysadovsky.org/uploads/1/3/1/8/131857041/cc6691a0f1.pdf
    • http://servicek9gear.com/uploads/1/3/0/7/130739751/bibifilabipesivare.pdf
    • http://ascendcustomcontracting.com/uploads/1/3/1/4/131407734/5121610.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_off0000d926.bin
2bc87171931d9d03523de430ca8eae44395246e1ca814265b1b08ef8d1efec92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD926 11372 bytes

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