Malicious PDF — malware analysis report

Static analysis result for SHA-256 c812b829f01c46cf…

MALICIOUS

PDF

42.1 KB Created: 2020-09-02 06:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b852ce160b7bc157e9dfdb8be315f46 SHA-1: ecb1523ea39bd69db8fc474020e0335778a784b6 SHA-256: c812b829f01c46cf0713864a702b0e42bf51aa04a787d1287fbfde5013885df6
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.com/wix?keyword=girlfriends+guide+cast+season+1'. This indicates a phishing or social engineering attempt to direct the user to malicious infrastructure. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the exact lure.

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/wix?keyword=girlfriends+guide+cast+season+1
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/soneve.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/bengali_movie_song_sudhu_tomari_jonno.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/mawojupotojobamejepafego.pdf
    • https://static.usrfiles.com/ugd/0049ca_b3de08e30e7d4ab1996de2bd2b12007d.pdf
    • https://static.usrfiles.com/ugd/a382ee_691a716b9a6843d397e4ed9399b9297f.pdf
    • https://static.usrfiles.com/ugd/79cb75_be979cb0fbdb4b439e3b20d82baec2f7.pdf
    • https://static.usrfiles.com/ugd/f4de5e_d37b5deee625451e9b7f5e5c30df1796.pdf
    • https://static.usrfiles.com/ugd/54fa57_110fa4b12bc64c3aa6e50feb2a2859b4.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_79213e5cee204086ae9a91aa75467af2.pdf
    • https://static.usrfiles.com/ugd/5ecadc_4bdd466b2763423bb737abe61c42be3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ecdd369a514c4b62820ed775c77ba857.pdf
    • https://static.usrfiles.com/ugd/3aca14_63ef0d0275344d0cb86dc077111a8d73.pdf
    • https://static.usrfiles.com/ugd/dba42a_a22247c600b7439baa244a70c2c2b7a7.pdf
    • https://static.usrfiles.com/ugd/e4a001_86cf309558ba4698a2a5e4eac72e8f28.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_off00006537.bin
79aabbc5582b2db0c56eb02ed60a268753ca7de13a9d4cd6a7ba9839211b1596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6537 5272 bytes
font_01_sfnt_off0000773f.bin
426f7a9ffe10adf2588a30aeb80af3c2a7d60e7f857880915fa42e4d9fca09ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 10548 bytes

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