Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca552399132f11f…

MALICIOUS

PDF

48.5 KB Created: 2020-08-29 17:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7e954e584bbe4f97f27e661374f2032 SHA-1: f53fabca2496dcfffabdbad0010e7f13f6e9089b SHA-256: 2ca552399132f11f5f13ca1405dad0b41d20fd27d93ae86d91fbee36cec35ccc
128 Risk Score

Malware Insights

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

The PDF contains a prominent call-to-action disguised as a download link for 'Kalnirnay 2017 marathi free download'. This link, 'https://ttraff.club/wix?keyword=kalnirnay+2017+marathi+free+download', is flagged as a malicious redirector. The document also features a large number of external PDF links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic to attract users searching for specific content. The primary malicious intent appears to be redirecting users to potentially harmful sites.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=kalnirnay+2017+marathi+free+download
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/small_pro_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/ridakebexutowikatoki.pdf
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/batman_arkham_knight_mods.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/wupopulubipegolitemozunas.pdf
    • https://static.usrfiles.com/ugd/b8c837_e6d01602948841ca831d1d93a96542a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b207ad7ef46945b7889860c5efc70661.pdf
    • https://static.usrfiles.com/ugd/b8c837_b88ebd2631654509ac83e7f3ef10dfc2.pdf
    • https://cdn.shopify.com/s/files/1/0432/2879/0946/files/benefits_of_work_life_balance.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/4082222719.pdf
    • https://cdn.shopify.com/s/files/1/0435/6718/6079/files/andhra_bank_debit_card_form.pdf
    • https://cdn.shopify.com/s/files/1/0464/5568/5288/files/woxevaxifepapijemibitog.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/78189067069.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000590d.bin
e2b83cf4fde064b2936e758a9b4821ab9318499473c7f480ae240b38c1040f92
pdf-font-stream PDF embedded font (sfnt) at offset 0x590D 5324 bytes
font_01_sfnt_off00006b1d.bin
40a3feaf964c4c1617123117fd1ad8196c992fbd8d5f870dd26f67de3ae347bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1D 13444 bytes
font_02_sfnt_off000095ca.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x95CA 4324 bytes
font_03_sfnt_off0000a3cc.bin
0dfdb359d9b0e1a3a62b8e2a9a442a8eecfbb7825cfb4c68df5d02014bb13eea
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CC 4452 bytes