Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5646e692f8a1d4c…

MALICIOUS

PDF

58.3 KB Created: 2020-06-02 16:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e8d89fe9893daa47e24690ddf99edce SHA-1: ce927103f66a58a95ed01302b18807a143c0adff SHA-256: d5646e692f8a1d4c15be85f224ccc69e07a162aa86033a559cffe38d542d8b1b
70 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many pointing to seemingly unrelated PDF files, suggesting a link farm or SEO poisoning tactic. One of the embedded links, http://bebekas.net/uploads/1/3/0/3/130323293/130323293.html#nsca+study+guide+free, is presented as a study guide, likely a lure to encourage clicks. The document body contains garbled text but also the URL http://bebekas.net/uploads/1/3/0/3/130323293/130323293.html#nsca+study+guide+free, reinforcing the lure. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bebekas.net/uploads/1/3/0/3/130323293/130323293.html#nsca+study+guide+free
    • http://historyedit.com/uploads/1/3/0/7/130739080/buluregaweworipar.pdf
    • http://motorcycleriderselitemre.com/uploads/1/3/1/3/131382630/xewavudilo-sebisavi-bobev-rurafeg.pdf
    • http://mta-sts.mail.whiskeywineandweather.com/uploads/1/3/0/9/130969150/kepetovosa.pdf
    • http://6985route21.com/uploads/1/3/1/4/131454791/rasuwujo-zosawominino.pdf
    • http://sciencewithheart.net/uploads/1/3/0/4/130483285/febuwivigitaro.pdf
    • http://seikerinternational.com/uploads/1/3/1/4/131406440/junetixipudekosutabi.pdf
    • http://bebekas.net/uploads/1/3/0/3/130323293/terms.html
    • http://bebekas.net/uploads/1/3/0/3/130323293/dmca.html
    • http://bebekas.net/uploads/1/3/0/3/130323293/policy.html
    • http://uuuvfcd.sites.looka.com/uploads/1/3/0/2/130274378/c75d01a.pdf
    • https://vuzokeguz.files.wordpress.com/2020/05/62412613113.pdf
    • https://pakuxada.files.wordpress.com/2020/05/diginegalaxerefivalekigew.pdf
    • https://dasawiduved.files.wordpress.com/2020/05/kixenuxajozekuxuvifoxoj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a1f1.bin
18758bb99f9c74b9163fb7ff8511894fb7b14d9f8bf7a7be84b498a5ec79f4b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F1 11332 bytes
font_01_sfnt_off0000c8b9.bin
b302cc8f5f09e2795de20733a7353734804733c4090a8051bb0a1a62ee9fdce2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B9 16076 bytes

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