Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3cc1c7819d561f…

MALICIOUS

PDF

42.5 KB Created: 2020-09-01 02:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 891eb19f340d907017f2f459351529d9 SHA-1: cdcdc5ee95d76a47c93f9ba5e4f2336e1ccbc586 SHA-256: 2a3cc1c7819d561f6822cc63c77d3cfd0e87c88f8c5d01a633cb68316ff85e08
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous links, with the primary one leading to a Shopify domain. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=multiples+worksheets+4th+grade', suggesting a lure to a malicious site disguised as educational content.

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/wix?keyword=multiples+worksheets+4th+grade
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/9413161411.pdf
    • https://cdn.shopify.com/s/files/1/0435/4362/5880/files/82167403407.pdf
    • https://cdn.shopify.com/s/files/1/0465/3269/0070/files/nolalatelevive.pdf
    • https://cdn.shopify.com/s/files/1/0430/9064/1045/files/kovuleleg.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/53737725830.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/fuzewebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/21765131743.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/32247090087.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jokixud.pdf
    • https://cdn.shopify.com/s/files/1/0438/8572/3816/files/faminolurumefusepo.pdf
    • https://cdn.shopify.com/s/files/1/0445/3564/4319/files/amor_y_amistad_jane_austen_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/6667650289.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2769/files/37914946182.pdf
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/xizas.pdf
    • https://cdn.shopify.com/s/files/1/0432/3541/0077/files/articles_on_education_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0460/0774/6721/files/weather_report_mumbai_pune.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_off0000664f.bin
d725cd9140ec1b360bc8c1db50a62291cb6196382505ee3ffee0c6c97a18abbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664F 5468 bytes
font_01_sfnt_off00007901.bin
4bc08cc3779d8d637d1db708acb7e8c93f677e59aab256cb2924a3f9f5c4ab70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7901 10740 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.