Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc4dbee6899fcbcf…

MALICIOUS

PDF

57.5 KB Created: 2020-03-14 22:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 45c1db54b63ba4f1816740f5b251ad58 SHA-1: 9a435802b2437e82262d61ea5e13aa103efa57f1 SHA-256: dc4dbee6899fcbcf088e1d69d01a3c92dd8b4bda54886a5c0e35585a4963df15
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, indicating a potential link farm or a distribution point for further malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this behavior, with 30 external links detected. The embedded URL 'http://ybki5.bpmtc.com/uploads/1/3/0/7/130775728/130775728.html#mitre+hand+saw+guide' is also a primary indicator of malicious intent. 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://ybki5.bpmtc.com/uploads/1/3/0/7/130775728/130775728.html#mitre+hand+saw+guide
    • http://olneyfarmandartmarket.com/uploads/1/3/1/0/131071072/1522222.pdf
    • http://northernmetal.shop/uploads/1/3/0/6/130639532/25cdd9c58512.pdf
    • http://rushbunny.com/uploads/1/3/0/2/130288854/vadonas_fasubemewar.pdf
    • http://ernstmatthew.com/uploads/1/3/0/7/130738675/9414100.pdf
    • http://minerobrasword.com/uploads/1/3/0/6/130620510/1589309.pdf
    • http://missiontofarm.net/uploads/1/3/0/2/130270894/zejemeparu.pdf
    • http://www.hjerlhedenaturl�b.dk/uploads/1/3/0/7/130775288/rijukamulasumag.pdf
    • http://susiestreats.com/uploads/1/3/0/5/130541285/dowonotevage.pdf
    • http://bulletininternationallawyermoves.com/uploads/1/3/0/8/130814535/5237763.pdf
    • http://susanferguson.org/uploads/1/3/0/7/130739680/640498.pdf
    • http://www.evagreenfloral.com/uploads/1/3/0/8/130814118/8961413.pdf
    • http://buildtheyoungbench.com/uploads/1/3/0/3/130323466/801a0b06ca.pdf
    • http://modernvintagemaker.com/uploads/1/3/0/5/130551235/pobokotorudud.pdf
    • http://annieweisstherapy.com/uploads/1/3/0/4/130436080/5440460.pdf
    • http://beyondtheghosts.com/uploads/1/3/0/8/130815482/pugojapoxuxot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009678.bin
61f62e05f742a7fbdf31e6ba027a94cf21d5ad2d5bf07eb62fe95433af838a84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9678 9084 bytes
font_01_sfnt_off0000b93b.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB93B 2616 bytes
font_02_sfnt_off0000c26f.bin
644e31c6a23321534028c1f3a837720d3d1ff7f07f2e613a5b61da3813f03d88		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC26F 16284 bytes

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