Malicious PDF — malware analysis report

Static analysis result for SHA-256 b75dff8ac7c10031…

MALICIOUS

PDF

41.9 KB Created: 2020-03-10 03:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3f9dcb7dcc8ee18b2f9717330ccba715 SHA-1: 90d429751e7b07d554934347c946553c33f64259 SHA-256: b75dff8ac7c10031cab167fdd4af47e9362ac5c30d53bf854a52782267571168
62 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 pointing to various domains, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to drive traffic to these external sites. The document body itself contains garbled text and some URLs, reinforcing the idea that the primary function is to redirect users. No scripts were extracted from this sample.

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://insureapplewatch.com/uploads/1/3/0/9/130968973/130968973.html#fermentative+production+of+acetic+acid+ppt
    • http://autoglassbirmingham.com/uploads/1/3/0/9/130969841/4919267.pdf
    • http://worldwideadultentertainmentselfpromotions.com/uploads/1/3/0/6/130621576/1bc000fe71195.pdf
    • http://rebirthhypnosis.com/uploads/1/3/0/7/130739904/8504082.pdf
    • http://learnized.com/uploads/1/3/0/6/130621063/4011625.pdf
    • http://adventuretested.com/uploads/1/3/0/6/130621597/kositovejit-lekato.pdf
    • http://builtonselfsuccess.org/uploads/1/3/0/9/130969548/3451351.pdf
    • http://www.brandonlowe.net/uploads/1/3/0/3/130379145/doxijuvisofekinaka.pdf
    • http://mindfuldemocracy.org/uploads/1/3/0/5/130588796/6526192.pdf
    • http://alexdibranco.us/uploads/1/3/0/5/130590673/pekujuz.pdf
    • http://jordn�raupplevelser.se/uploads/1/3/0/7/130776096/jusosamotimeriwez.pdf
    • http://webdisk.abccrafts.co.za/uploads/1/3/0/5/130546880/gezal.pdf
    • http://ultimatemartialartsusa.com/uploads/1/3/0/3/130313657/94ece56a475.pdf
    • http://mylesateliersdenine.com/uploads/1/3/0/7/130776402/zapekedisew.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_off0000658e.bin
f86deb00df8581700b31ac9963201cfd6f99955a388117699aecb1d1b4899fb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x658E 7788 bytes
font_01_sfnt_off000083a7.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A7 16036 bytes

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