Malicious PDF — malware analysis report

Static analysis result for SHA-256 90d519a8e63d6747…

MALICIOUS

PDF

34.1 KB Created: 2020-06-01 22:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd1837aceadd83c4a7e9ab362cc09174 SHA-1: 3436794a1bf71e7d4e8e7ca81661d1d870f235f8 SHA-256: 90d519a8e63d67474b6143692abb1e1f90d104e9ab38bbdb62e5021ba9a6357f
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm designed to attract traffic or distribute potentially unwanted software. The presence of the string 'frontline commando d day apk mod dow' in the document body further suggests a lure for software downloads. No scripts were extracted from this sample.

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://suntidetravels.xsideas.com/uploads/1/3/0/6/130620668/130620668.html#frontline+commando+d+day+apk+mod+dow
    • http://harrishomeimprovements.com/uploads/1/3/0/3/130323302/2469513.pdf
    • http://cardinalbuilders.net/uploads/1/3/0/3/130313454/9273697.pdf
    • http://artipasta.es/uploads/1/3/0/7/130739811/e40e2.pdf
    • http://mydatasynth.com/uploads/1/3/0/5/130539840/96e56673ddfd.pdf
    • http://singaporesimclub.com/uploads/1/3/0/8/130873730/5618563.pdf
    • http://lepinmace.com/uploads/1/3/0/2/130289225/7e33693b5663.pdf
    • http://pxatlanta.com/uploads/1/3/1/3/131382032/zafowikurogej-dipanajitivas-lasemuwitagokiw.pdf
    • http://dmcihomescebu.com/uploads/1/3/0/6/130604749/mavolirema.pdf
    • http://wwe.annedesantis.com/uploads/1/3/1/4/131454034/metevilu.pdf
    • http://suntidetravels.xsideas.com/uploads/1/3/0/6/130620668/terms.html
    • http://suntidetravels.xsideas.com/uploads/1/3/0/6/130620668/dmca.html
    • http://suntidetravels.xsideas.com/uploads/1/3/0/6/130620668/policy.html
    • https://jidinetobix.files.wordpress.com/2020/05/javotofokizumuxosiseki.pdf
    • https://lixogobofa.files.wordpress.com/2020/05/85258789894.pdf
    • https://duzixegave.files.wordpress.com/2020/05/88697311526.pdf
    • https://purekekimol.files.wordpress.com/2020/05/toluvowaxus.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_off00005b0c.bin
1a1e46d7d182437fdfc7e98d3519662d724a0831628b81544290a2e9a0b67d37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0C 9848 bytes

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