Malicious PDF — malware analysis report

Static analysis result for SHA-256 394e4a207a0dc3ba…

MALICIOUS

PDF

52.5 KB Created: 2020-08-22 06:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13f8cae54a549531c27003cbd5e36c08 SHA-1: aea35085ad1db70536a98d1c5d181976616422c1 SHA-256: 394e4a207a0dc3ba6b8dba97ab2bca3f3e47e253812a812b5c5350459068e646
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to university admissions, disguised as a form. It embeds numerous links, with a critical finding indicating a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=uttarakhand+open+university+admission+form+2018-+19, which likely leads to further malicious content. The presence of a "download button" heuristic further supports the malicious intent.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=uttarakhand+open+university+admission+form+2018-+19
    • http://files.airportelearning.com/uploads/1/3/0/9/130969322/fuxojibasokamob.pdf
    • http://kunewilu.ericamaesincee.com/uploads/1/3/0/8/130874104/ralemetolegak.pdf
    • http://files.divideny.org/uploads/1/3/2/6/132696155/vumamesafirobusuzoge.pdf
    • http://files.puertoricanparade.org/uploads/1/3/1/6/131607407/bc6539bb.pdf
    • https://cdn.shopify.com/s/files/1/0437/8158/7093/files/mixes.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9562/files/vuluwija.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3880/files/78832886556.pdf
    • https://cdn.shopify.com/s/files/1/0435/1780/4708/files/android_multi_tools_software_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/6052/7253/files/82035047380.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2261/files/wajakazolik.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/1558423354.pdf
    • https://cdn.shopify.com/s/files/1/0430/9955/3959/files/24969809455.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/brentuximab_package_insert.pdf
    • https://cdn.shopify.com/s/files/1/0437/0294/3899/files/bhakti_photo_free_hd.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
stream_006_off0000b0d0.bin
e52b2a151c1a8bc9b22e5179fbaba8818020e089f41bc83483fb8d691348555c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB0D0 4500 bytes
font_00_sfnt_off00006e68.bin
469cd64b1768931be77de23713545abae56e4adc2d0a262cdb92259ab7e6c08e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E68 6172 bytes
font_01_sfnt_off00008350.bin
4cdd11ca00d8a557bcf67afc894ea76b73dd439545639514ad42249d8e5f3c81
pdf-font-stream PDF embedded font (sfnt) at offset 0x8350 14436 bytes