Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce406eb54be33077…

MALICIOUS

PDF

55.3 KB Created: 2020-04-02 22:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5aefbe6a16ac713568fa76e90dcf984b SHA-1: 1efa6069a1026f1ea9186e503fa6367fb962ab10 SHA-256: ce406eb54be33077a1fe68de4d9a1b77a758c33c051bfdee2776bee5437f6032
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact lure. The primary attack pattern observed is the mass distribution of 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://hyperdrivehistory.com/uploads/1/3/0/2/130289651/130289651.html#programa+de+computacion+para+primaria
    • http://unblindedstore.com/uploads/1/3/0/7/130775172/08403c1.pdf
    • http://thefieldofpossibilities.com/uploads/1/3/0/7/130738974/13a2d9ba.pdf
    • http://jamorrowfreeman.com/uploads/1/3/0/6/130639465/c13bedaf4d07.pdf
    • http://hostmaster.vakantiewoningakkerwinde.be/uploads/1/3/0/4/130436018/semuxuzab_rofim_lexovosaz.pdf
    • http://picassolovechild.com/uploads/1/3/0/7/130775242/basiwimisufex.pdf
    • http://brotherjohnbookorders.shop/uploads/1/3/1/1/131163690/86e6d51a.pdf
    • http://perfectstrangerphotography.com/uploads/1/3/0/7/130775610/jitix.pdf
    • http://antiviruseonlineprotectservice.site/uploads/1/3/0/6/130620395/vajaguk_rubopulevub_nurusebarale_sagese.pdf
    • http://georenewal.org/uploads/1/3/0/6/130639792/mifodaxezubesiz_taladav_redig.pdf
    • http://quantockpetequine.org/uploads/1/3/0/2/130291463/vifodupomobog.pdf
    • http://www.nayibbukelepresidente.com/uploads/1/3/0/3/130379126/54dcab36ad.pdf
    • http://drisenproducts.com/uploads/1/3/0/3/130313180/fapemivezan.pdf
    • http://brooklynnativez.com/uploads/1/3/0/4/130488604/3954ccc.pdf
    • http://wishbonesje.net/uploads/1/3/0/4/130489926/920195.pdf
    • http://www.gnostisisme.org/uploads/1/3/0/4/130483875/0b7f9.pdf
    • http://mobilemechanicbasildon.com/uploads/1/3/0/5/130551338/dimuketasifizomepe.pdf
    • http://howwastomorrow.com/uploads/1/3/0/4/130488227/fokorituni-bijegep-leverafugi-vobomovome.pdf
    • http://matankorin.com/uploads/1/3/0/3/130323417/xemoxut.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_off0000a5e6.bin
b095009e1aa7b679086a2dd093949a1e2bfdfa179c83d9e64a20210f199a406d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E6 1544 bytes
font_01_sfnt_off0000ad56.bin
d4c04ed31b4f44b2b48c5255962fc061a21d5da8a4044db85a0019e98f00c4ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD56 9340 bytes

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