Malicious PDF — malware analysis report

Static analysis result for SHA-256 291213ae7e8402d4…

MALICIOUS

PDF

39.5 KB Created: 2020-03-29 09:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 87be3dfc87eb910365b8a4da95c50a65 SHA-1: 62ac624fe1a01028dca3871f501a31c73801c27b SHA-256: 291213ae7e8402d47855c8aed7e0d3fa50cf32eb04621199eb61095fc5a0de9b
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that is also present in the list of external links. This suggests the primary purpose is to redirect users to a large collection of other PDFs hosted across multiple domains, likely for SEO spam or to distribute further malicious content.

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://asociacionperiodistaspr.org/uploads/1/3/0/6/130620819/130620819.html#why+isn%27t+the+book+of+judith+in+the+bible
    • http://alexcapitalgroup.com/uploads/1/3/0/5/130589159/bff9a9214b67.pdf
    • http://brandingidol.com/uploads/1/3/0/2/130289441/molewo.pdf
    • http://adspropertymanagement.com/uploads/1/3/0/8/130874524/3926cffffa170c.pdf
    • http://fitwellpro.com/uploads/1/3/0/3/130313193/9f1d96a58a70197.pdf
    • http://kerrbears.com/uploads/1/3/0/6/130639622/diwogizakipu.pdf
    • http://twinflamerunner.com/uploads/1/3/0/3/130323236/7824007.pdf
    • http://downtownequestrian.com/uploads/1/3/1/3/131383497/zesubiwab-jifarun-rafuzu-nibuzetas.pdf
    • http://acehomecareservicewherewe.com/uploads/1/3/0/7/130739629/8554181.pdf
    • http://fermentedspirits.com/uploads/1/3/0/5/130551512/letifuwovetexuteto.pdf
    • http://gtggives.org/uploads/1/3/0/3/130312957/gimij.pdf
    • http://internationalcrazyhampers.com.au/uploads/1/3/0/5/130550775/cdb2963.pdf
    • http://www.rb-animations.com/uploads/1/3/0/4/130435622/65a2710d0.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000722d.bin
89def7425e0c4cd85b1f0a248d5678a6febe43b86329932e5b0453fcd4a4f0f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x722D 8080 bytes

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