Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1bc936a7af3839d…

MALICIOUS

PDF

38.0 KB Created: 2020-08-11 23:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69d984af3a9194dec0c5a78949fed0e1 SHA-1: df99bf1eca8b3a873330bc1aa02c25fa734e23cb SHA-256: a1bc936a7af3839d9eb77d7ffa5ebb892e770edd2e5f4ca17a071acb0229966b
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as an exercise document. The document also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The primary malicious URL is https://ttraff.cc/wb?keyword=machine%20synchrone%20pdf%20exercice.

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/wb?keyword=machine%20synchrone%20pdf%20exercice
    • http://files.stitchesbylynsey.com/uploads/1/3/0/7/130738499/7513939f.pdf
    • http://kizerezo.deltamoonsoap.com/uploads/1/3/2/6/132695471/duwuzew-vewusev.pdf
    • http://giruti.orphan-girl.com/uploads/1/3/1/4/131407995/b436c15589.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/law_firm_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/27251215331.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/javezujus.pdf
    • https://cdn.shopify.com/s/files/1/0437/6195/9069/files/mortal_kombat_super_nintendo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/kilabetugizodenaforeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/2009333746.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/jesobewolibutoxewoxavimil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/pegaxewe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/cambios_psicologicos_en_la_adultez.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/8301191272.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_off000046e7.bin
b532b3a3a14082e1dfd9618d3e18fb0c824aa770d6f625dce082255939849333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46E7 5092 bytes
font_01_sfnt_off0000582b.bin
480f12c5d79a6c18a78841de64314c7fc4cfd46bccc78772d270082f1510d58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582B 11088 bytes
font_02_sfnt_off00007b9c.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 4324 bytes

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