Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b2093d4476b046…

MALICIOUS

PDF

34.6 KB Created: 2020-08-06 18:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a293150593a839ab811bc7e7e2a2771 SHA-1: ce0dff633b622e8a450887c86f75216a4332a4b8 SHA-256: e3b2093d4476b04613263832855cb5bb384cdd68e330fd1de62c17247c925a61
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body text and embedded links suggest a lure to download a file, likely leading to malware. The primary malicious IOC is the redirector URL.

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=navbharat+newspaper+raipur+pdf+download
    • http://wowavu.nvintl.com/uploads/1/3/0/7/130776487/tofaditiwoz-bezeg-pejivekedibixo-xituwijenefofex.pdf
    • http://files.neurothinktank.com/uploads/1/3/1/6/131606128/dusewomotaxike_pizewa_zopurirug.pdf
    • http://files.cemcaracing.com/uploads/1/3/2/6/132681880/1866966.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/xavuma.pdf
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/15823009038.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/webomobituwisumepepaxifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/fatenavovofibebifegosu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/wavupemat.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/serotevonedazegufasiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/rulowifapixixetelusizese.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/fifonologafowuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vidabuvuwegorowomilamum.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/30947300050.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/90772466098.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/64685079438.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_off000049f4.bin
0826e0cb6f70cfc7953946b9bdd1ff8fc615e754b9e8b24f4b9840dd9727585f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49F4 5388 bytes
font_01_sfnt_off00005c51.bin
4940131a3ef33285402cafb36295c6f7d9393af5770c1d9bcc0f6f2c76499734		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C51 9692 bytes

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