Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70eb67c5cedef5b…

MALICIOUS

PDF

49.1 KB Created: 2020-08-11 11:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9273d5fe998272270d4c31ccfe8f3b48 SHA-1: 124027220bd9577c2bb0106b15a3c286f7b38e91 SHA-256: e70eb67c5cedef5b2d0e7ec83ba9a1882f77aa7bdaa09e90f26c170e1e2b827f
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous embedded links, a technique often used for SEO manipulation or to redirect users to malicious content. One critical heuristic firing indicates a link to known malicious redirector infrastructure. The document body contains a URL that matches the malicious redirector, suggesting an attempt to lure users to a harmful site. No scripts were extracted from this sample.

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.com/pify?keyword=basic+english+grammar+teacher+s+guide+third+edition+pdf
    • http://tikupupat.angiedlee.com/uploads/1/3/2/3/132302780/dukibipen.pdf
    • http://files.thanksforgoing.com/uploads/1/3/1/3/131379111/7746051.pdf
    • http://kowes.regencycommunities.com/uploads/1/3/0/8/130814178/sefazemekotexos_wenegezakofuwu_lizowenen_xifagixal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65233410578.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/gedumururafalijatoli.pdf
    • https://cdn.shopify.com/s/files/1/0435/1862/3896/files/81388672214.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/79617191613.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/54070209100.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/pujariwowobililusoxaxixab.pdf
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/64922231845.pdf
    • https://cdn.shopify.com/s/files/1/0432/5638/1597/files/mozowelo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/3306415679.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7351/files/61029547569.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/2527320423.pdf
    • https://cdn.shopify.com/s/files/1/0430/1612/6625/files/fewilig.pdf
    • https://cdn.shopify.com/s/files/1/0435/8435/6509/files/asterix_the_gaul_english.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_off00007466.bin
de415eb771362e9fa86f33906c774e843f04c0210683d6da86f320b69b5bd266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7466 5616 bytes
font_01_sfnt_off0000874b.bin
4a4fda19a32f52e6e18431f25e2053c9c733cce10ccef62ad34cb1deb2b82084		 pdf-font-stream PDF embedded font (sfnt) at offset 0x874B 15716 bytes

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