Malicious PDF — malware analysis report

Static analysis result for SHA-256 d720fda8f578d783…

MALICIOUS

PDF

40.3 KB Created: 2020-08-06 11:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cd1b94c96ea0f675391ba22b6464a6c SHA-1: 0cac20a64588ab575330a57854f1354a448ee648 SHA-256: d720fda8f578d7835ec91db32b8a4d788639f0155c2ff5c2ef80bf6ca2620ee2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=insert%20pdf%20to%20excel%20file'. This indicates the document's primary purpose is to lure users to a potentially harmful external site. The file also contains a large number of embedded links, characteristic of SEO poisoning or link farm tactics, further supporting the malicious intent.

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=insert%20pdf%20to%20excel%20file
    • http://files.jacopodellaquercia.com/uploads/1/3/2/7/132740836/zololazifudexuwi.pdf
    • http://files.choubijoudesign.com/uploads/1/3/0/7/130739376/fofovibafe-figux.pdf
    • http://files.nerdendo.com/uploads/1/3/2/7/132740327/12ee94fcf9c9559.pdf
    • http://files.crueltyfreecuisine.com/uploads/1/3/1/4/131454270/b292d9f3d25b01.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/29728266178.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/6965210923.pdf
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/45755283140.pdf
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/runecloth_bag_classic.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/69815209657.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdf
    • https://cdn.shopify.com/s/files/1/0428/5290/9212/files/generador_de_tarjeta_de_credito.pdf
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/48263970500.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/xigemibureras.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/73146613245.pdf
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/fosiladifabidalese.pdf
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/bezubixavuwaxotupaledafap.pdf
    • https://cdn.shopify.com/s/files/1/0432/4576/4770/files/de_cero_a_uno_peter_thiel.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_off000061cd.bin
8a3b14095171527e6247d4a59a00cc7b96c2d76ce188d10cf26659cd22a8562b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CD 4944 bytes
font_01_sfnt_off000072b8.bin
ee771f0b154ed3b825ea2a4681f1993f8519ffddf305efba85d09b3807c6d4a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B8 9852 bytes

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