Malicious PDF — malware analysis report

Static analysis result for SHA-256 5228fb053fb251d8…

MALICIOUS

PDF

43.6 KB Created: 2020-08-26 16:37:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6097b07ff49ada502da3cebc1e6f454a SHA-1: c4f43a5a4f8bac0ba4179e71b59c4a3a4b8183b1 SHA-256: 5228fb053fb251d806f98a38fe66981aef728b449543a27fb6b6a6944fba4ada
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=zoo+tycoon+2+full+download', is designed to lure users into downloading potentially unwanted software, in this case, 'zoo tycoon 2 full download'. The document also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, many hosted on Shopify. The primary intent appears to be driving traffic to malicious infrastructure through social engineering.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=zoo+tycoon+2+full+download
    • http://files.hansandjudy.com/uploads/1/3/1/1/131164383/d44695.pdf
    • http://zugemat.killarabyod.com.au/uploads/1/3/0/8/130874422/7b12b171b0cb7.pdf
    • http://files.alexandroquerevalu.eu/uploads/1/3/1/4/131454521/1549bebb82f035.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/gadewitobotabotuwuxemileg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94229011204.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdf
    • https://cdn.shopify.com/s/files/1/0452/7469/3794/files/tewuvelenexilos.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/90591419001.pdf
    • https://cdn.shopify.com/s/files/1/0459/2258/2679/files/kmspico_activator_office_2010_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/4384/0160/files/41650905987.pdf
    • https://cdn.shopify.com/s/files/1/0466/5127/7477/files/vabevamaxadajovi.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_off000060ba.bin
718f4e47d6bfb4db2ec3a7ac02fd8aac2d9e13e2b3e6f0ddfb0269f90eae903a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BA 4740 bytes
font_01_sfnt_off00007101.bin
1fdcb680ddb484c87e317c8b3e934b0f53faf26836cbc2624c128a9212a03b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7101 10204 bytes
font_02_sfnt_off000093f6.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93F6 4324 bytes

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