Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32e5606354dc626…

MALICIOUS

PDF

46.0 KB Created: 2020-04-21 00:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 32cc51bca48b1e1c748054a277cc5cd8 SHA-1: 361eed8986fabb0248847c8aaf1fd12ff52fa69d SHA-256: c32e5606354dc626e86f45308200b7b8a7162716668d79393e446705e029fb78
70 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named PDFs, suggesting a link farm designed to attract traffic. One of the embedded URLs, 'http://sjposu.com/uploads/1/3/0/5/130551675/130551675.html#vsco+all+filters+apk+2018', indicates a lure for software downloads. The presence of a 'Download Button' heuristic further supports the malicious intent of directing users to external resources.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://sjposu.com/uploads/1/3/0/5/130551675/130551675.html#vsco+all+filters+apk+2018
    • http://claytonneldj.com/uploads/1/3/0/4/130483515/4853728.pdf
    • http://pecannuts.net/uploads/1/3/0/3/130323328/080ac0b62.pdf
    • http://simplyorganizedbyleila.com/uploads/1/3/0/6/130604446/fatutafokibile-wukuvabezi-pawovugovuj-disekagem.pdf
    • http://mysticalvariety.com/uploads/1/3/1/4/131438190/mozakidebonak-vesafosuxiw-sipot-gafinosujed.pdf
    • http://antvalseminars.com/uploads/1/3/0/4/130483959/vatudijigotuwegiwiv.pdf
    • http://emmausmasons.net/uploads/1/3/0/7/130740148/9b58deaea029.pdf
    • http://vinasupermarket.com/uploads/1/3/0/2/130272333/sekapum.pdf
    • http://ocdorganiccleaningdetailing.com/uploads/1/3/0/5/130538986/08404f40ae.pdf
    • http://sheffieldacres.com/uploads/1/3/0/7/130776267/7a7dc.pdf
    • http://dariobartoli.com/uploads/1/3/1/4/131453019/da81a426f03.pdf
    • http://rtenterprises.net/uploads/1/3/1/4/131407300/kaxukujepi.pdf
    • http://trojanaquaticclub.org/uploads/1/3/1/6/131606003/5625360.pdf
    • http://physionary.com/uploads/1/3/0/6/130603917/vamakominebulobufopi.pdf
    • http://shiatsuthaiyogamassage.com/uploads/1/3/0/7/130739740/fepakogutaruged_poxefad_puruv.pdf
    • http://hearthstonebkg.com/uploads/1/3/0/9/130969727/rosewalil.pdf
    • http://physionary.com/uploads/1/3/0/6/130603917/va
    • 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_off000089e0.bin
68b69ecd5bbfdcd203094e718505f7f697642b952339318b15ef3726bb060f12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89E0 8892 bytes

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