Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38984803979080b…

MALICIOUS

PDF

47.2 KB Created: 2020-08-07 20:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77feab5515c5f21b21edf7c070723466 SHA-1: dbc17bb0c1554316307f5715f8346e998fa0dea8 SHA-256: c38984803979080b721d78753fb58293dff18cefceed00662b6b2959d2c3c1c5
120 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous external PDF files, with one specific URL identified as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and text related to 'Anaerobias facultativas pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for phishing or malware delivery.

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.ru/pify?keyword=anaerobias+facultativas+pdf
    • http://files.cabaretatstudiob.com/uploads/1/3/1/4/131407227/5d0d5aa.pdf
    • http://files.kashimondojo.com/uploads/1/3/0/7/130739831/jofekagot.pdf
    • http://files.charlielavaroni.com/uploads/1/3/0/9/130969368/eafe4.pdf
    • http://files.widehorizonsretreat.com/uploads/1/3/1/3/131381881/nalinetoxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0133/8266/files/chaldean_numerology_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/ramulakuxoru.pdf
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/33607863350.pdf
    • https://cdn.shopify.com/s/files/1/0432/8318/5832/files/lotipobivubap.pdf
    • https://cdn.shopify.com/s/files/1/0448/0499/7271/files/convert_to_d_d_5e.pdf
    • https://cdn.shopify.com/s/files/1/0438/9847/0552/files/bumakixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/89725078822.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/kobigobadujuwa.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/becoming_an_independent_security_consultant.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/89208099447.pdf
    • https://cdn.shopify.com/s/files/1/0437/4609/9349/files/78648904933.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/
    • https://cdn.shopify.com/s/files/1/0448/0499/7271/files/convert_to_d_d_5e.pd

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069b8.bin
4f710874a1d8cbfb3a852c95c89344491c981a598197952b88c2849e4553b960
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 5220 bytes
font_01_sfnt_off00007b7c.bin
46ba0d5fef5789db8ef8d8e98fe417dde78813609e7a479340493173776e77b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7C 11204 bytes
font_02_sfnt_off00009fdb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDB 4324 bytes