Malicious PDF — malware analysis report

Static analysis result for SHA-256 338d72c99c1022e8…

MALICIOUS

PDF

36.5 KB Created: 2020-03-25 11:13:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5b2111fdfd15dece9795a628c67595f6 SHA-1: ae38c0d3507894b80e445a3b0534a706e395b515 SHA-256: 338d72c99c1022e8a1077493c7e3fccdc78d67f65ace16ab13a024c9883a5b3c
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 External Remote Services

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO spam campaign. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is the distribution of these external links.

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://strigiformae.net/uploads/1/3/0/2/130270945/130270945.html#allen+bradley+1769-iq16+datasheet
    • http://mx.pinehavenlamas.com/uploads/1/3/0/7/130739686/kakixadiju.pdf
    • http://outlookglass.net/uploads/1/3/0/5/130588396/5841200.pdf
    • http://metrowesttax.com/uploads/1/3/1/0/131070888/c7f827699.pdf
    • http://heidi-rose.com/uploads/1/3/0/7/130776043/jopasuwiza-jelobesefuw.pdf
    • http://reeleert.com/uploads/1/3/0/6/130639609/sesedirovobik.pdf
    • http://mrebeccaprattfortowncouncil.org/uploads/1/3/0/2/130270917/8794992.pdf
    • http://jalksjdlfkjslkjf01.space/uploads/1/3/0/6/130620483/mepeto.pdf
    • http://tongzhoudezhoupukepai.f18.ebkf.org/uploads/1/3/0/5/130547624/bosas_zezazam_dikowapesob.pdf
    • http://minecraftray.site/uploads/1/3/0/7/130775626/bapemilatab-petinuxiritos.pdf
    • http://nashandcothreads.com/uploads/1/3/0/4/130436154/5409484.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_off00005181.bin
b012dd91e3c878007db0b8ebbd79b392ab9ddae847a8f4b83822b36d992492f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5181 7708 bytes
font_01_sfnt_off00006f7a.bin
0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7A 16140 bytes

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