Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae2fb4c3964e126…

MALICIOUS

PDF

41.4 KB Created: 2020-04-09 05:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 83956b8d71d816cbb26251f1ac9ed4fa SHA-1: b3272f150a35ba84fec3da9eec1dce022ee1d7c7 SHA-256: cae2fb4c3964e12675b652b823c6f02c254a38d77cb7cc4820c046a849516043
62 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on domains that appear to be part of a link farm or SEO scheme. The document body, though heavily obfuscated, contains references to 'Dwarf fortress change stockpile size' and the authoring application 'wkhtmltopdf', suggesting a lure to a fake guide. The primary intent appears to be directing users to malicious or compromised websites through a deceptive document.

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://woodlandstuition.com/uploads/1/3/1/0/131070195/131070195.html#dwarf+fortress+change+stockpile+size
    • http://arjllcgroup.com/uploads/1/3/0/5/130588206/e289f9fa51.pdf
    • http://gvents.net/uploads/1/3/1/0/131071181/lawigezemem.pdf
    • http://sipandshoptx.com/uploads/1/3/0/6/130605078/b2f3188.pdf
    • http://merakiparbiomagnetico.com/uploads/1/3/0/5/130590410/0c64beda2.pdf
    • http://reneemasiello.com/uploads/1/3/0/5/130541133/sakido.pdf
    • http://wozziesontour.com/uploads/1/3/0/7/130776331/7243fb25497.pdf
    • http://troop127.com/uploads/1/3/0/6/130639074/nekagufejitejezune.pdf
    • http://simplicitysold.com/uploads/1/3/1/3/131379740/d328ff47f22a90.pdf
    • http://www.latinosandtech.berkeley.edu/uploads/1/3/0/3/130313022/golijolaxo_robadepunat_sagofepaz_vebaza.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_off00006e39.bin
cf00d1deeefd826d53f6198f15dba75bc433f6e03284943342e4c12434f0bb39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E39 8276 bytes
font_01_sfnt_off00008e3a.bin
1528f7ed7a880991cc50f0e3309a4d7cc9b2729835f12e5889a147d869770dbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3A 2884 bytes

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