Malicious PDF — malware analysis report

Static analysis result for SHA-256 2994823b43d56a22…

MALICIOUS

PDF

51.7 KB Created: 2020-04-19 20:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9e2f958ea8c2ea6bcc86078625912834 SHA-1: bc412d7b75271b286ced80cfd43c7e3db0838609 SHA-256: 2994823b43d56a22142cfadc89a3c3ee06346ede9bda71aadfe735879e7ee48f
92 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to numerous external websites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'alanstudios.net' being a dominant host. The document body, though heavily obfuscated, contains a reference to 'Movimiento circular uniforme definicion pdf', suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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://homebasemkt.com/uploads/1/3/0/2/130271031/130271031.html#movimiento+circular+uniforme+definicion+pdf
    • http://alanstudios.net/uploads/1/3/0/4/130436125/7fac35c1cfc.pdf
    • http://vav.tokyo/uploads/1/3/0/6/130604782/befuronevotewadikale.pdf
    • http://epistemy.info/uploads/1/3/1/0/131070364/baziw_kukafe_lirum_sibakove.pdf
    • http://welcometoenlace.com/uploads/1/3/1/0/131069870/c3169956.pdf
    • http://allforoneprint.com/uploads/1/3/1/0/131070859/movenux.pdf
    • http://fomg.shop/uploads/1/3/0/6/130621643/kamomoxefugatufumib.pdf
    • http://brackmanrowland.com/uploads/1/3/0/2/130270932/f7424ab.pdf
    • http://seattlesoccer.net/uploads/1/3/0/6/130604040/bowosagez.pdf
    • http://vegankidsclub.com/uploads/1/3/0/6/130620456/1212524.pdf
    • http://high-country-villas.com/uploads/1/3/0/6/130620963/411271.pdf
    • http://jerryandwen.com/uploads/1/3/0/4/130478433/d1705dd4238468.pdf
    • http://votebyronmartin.com/uploads/1/3/0/6/130604394/fabadilu-maxemejasepawol.pdf
    • http://pouvalouejc.com/uploads/1/3/0/5/130540281/potav.pdf
    • http://m40925.com/uploads/1/3/0/5/130551661/mopazobarunefunebuv.pdf
    • http://justinrossberg.com/uploads/1/3/0/4/130483866/fepawapavesupi.pdf
    • http://votebyronmartin.com/uploads/1/3/0
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009406.bin
6425dc0ddc93df072275cfeee798337f1b05d3a72be66245f032317c3b45b2a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9406 9456 bytes
font_01_sfnt_off0000b622.bin
fa55eaa1767671eb4485dd755640f740b2ffcca7bbe0b67691789e1ec05a8139		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB622 3384 bytes

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