Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a98fd677bd9cfc6…

MALICIOUS

PDF

46.5 KB Created: 2020-08-15 15:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42f9cfac119ef04254223aeb050b04f1 SHA-1: cb0b4f52f021d86028c237e4cc77fbe1a37f1dd4 SHA-256: 8a98fd677bd9cfc6045f94c169aa21ec3f381ff7bf4f38608a1dab56e66a6198
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Tamil calendar january 2019 pdf' and also includes the malicious redirector URL. This suggests a phishing or scam attempt to redirect users to malicious 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.com/wb?keyword=tamil%20calendar%20january%202019%20pdf
    • http://files.lakelandplayers.net/uploads/1/3/1/0/131070938/0481c0ae53.pdf
    • http://sadim.norcalstma.org/uploads/1/3/1/4/131406717/satana.pdf
    • http://files.theventure.blog/uploads/1/3/0/7/130775840/7894618.pdf
    • https://cdn.shopify.com/s/files/1/0448/6037/5201/files/restaurant_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2443/9704/files/59750661212.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/free_printable_guardianship_forms.pdf
    • https://cdn.shopify.com/s/files/1/0432/8947/7278/files/pegutomul.pdf
    • https://cdn.shopify.com/s/files/1/0438/3883/2800/files/where_does_quicken_printer_save_files.pdf
    • https://cdn.shopify.com/s/files/1/0437/4547/6762/files/app_store_optimization_bible.pdf
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/8038862209.pdf
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/33471745190.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/tobelo.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049a0.bin
1f180d7d132ec70fce394cdb21df871e5071b1ccb574fafa6bede4c387a1c3ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49A0 5424 bytes
font_01_sfnt_off00005bf2.bin
f747eae70b613a7addfe878d940650e583504124e476350495eb712ecf3e0446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF2 3024 bytes
font_02_sfnt_off00006720.bin
817a9de0d199d30b9a83e2b2c980b90ebd3e5b05f4038745f61f5ee2b9825a8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6720 9600 bytes
font_03_sfnt_off0000882b.bin
5d52f40a13f54bcc329d29992e3abd0fd28294c8bc547691d9075fb1d42365f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x882B 16076 bytes
font_04_sfnt_off00009cd0.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD0 4324 bytes

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