Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97996e68fc0cdb8…

MALICIOUS

PDF

44.0 KB Created: 2020-08-11 23:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722353d0076068276e98c61c786636a3 SHA-1: b7342fd340af10f58d4eca0ec878cf9f1cfbd0d8 SHA-256: c97996e68fc0cdb8d67cb7b1a334b4977d5bbb3bf63e3432fb717bdb9d2cc504
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=maharashtra%20state%20board%20books%20download%20pdf'. This URL is presented within the document body, disguised as a link to download educational books. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious link is likely intended to redirect users to a phishing or malware distribution site.

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.cc/wb?keyword=maharashtra%20state%20board%20books%20download%20pdf
    • http://files.clubeinternoscirurgiacardiaca.com/uploads/1/3/0/8/130874012/pisikuwewa_fusabiwakubigo_mikogeworoxed_redazatawedam.pdf
    • http://xetobom.anselmianabbeyplayers.org/uploads/1/3/1/6/131606758/fuponameb-towiv-pomadalofuvelef-zaluze.pdf
    • http://files.statedshowroom.com/uploads/1/3/1/3/131398547/dedido.pdf
    • http://files.kannwoodtimberworks.com/uploads/1/3/0/8/130814861/sewobixono_witajufikul_wikuxale.pdf
    • https://cdn.shopify.com/s/files/1/0431/8003/2160/files/depuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/jurnal_tentang_alkali_dan_alkali_tanah.pdf
    • https://cdn.shopify.com/s/files/1/0438/4371/5222/files/18045343315.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/general_virology.pdf
    • https://cdn.shopify.com/s/files/1/0449/8400/8862/files/ambient_air_pollution_and_biomarkers_of_health_effect.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/95621850247.pdf
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/tusalorajuligabale.pdf
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/kasado.pdf
    • https://cdn.shopify.com/s/files/1/0437/9305/5904/files/75186590402.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4687/files/puvapukexugevunil.pdf
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/wasisikudenezuvoje.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/34973177712.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005da1.bin
629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA1 6440 bytes
font_01_sfnt_off00006d95.bin
a1b1192d04dc0da3b7d8c6af6f75cae9c6e0c0cc018d3731489a17c15c8d7e03
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D95 5428 bytes
font_02_sfnt_off00008015.bin
0ad5e4454b4949f1528a691407c240d3d378a4ad17e8ae8df4fff74b1dac3da0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8015 10012 bytes