Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9592dc799c162b…

MALICIOUS

PDF

40.3 KB Created: 2020-07-08 20:40:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66c61318fc75cf8bcd62d7df4e83b669 SHA-1: ab36abc271203cc7c384592b2f28f0599b2a330f SHA-256: cc9592dc799c162bb4d4372916d755fa40c94ce0593542f892497da867f75b19
120 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Calculus James Stewart 8th Edition Solutions PDF' and embeds a large number of external links. One of these links, 'https://ttraff.com/wb?keyword=calculus%20james%20stewart%208th%20edition%20solutions%20pdf', is identified as a malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO abuse for traffic generation. No scripts were extracted from this sample.

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=calculus%20james%20stewart%208th%20edition%20solutions%20pdf
    • http://files.tactmealcenter.org/uploads/1/3/1/4/131438167/2128811.pdf
    • http://files.jariosvega.com/uploads/1/3/1/8/131856365/pofurudavi-xitokumi.pdf
    • http://files.peakhealthcaremaryland.com/uploads/1/3/1/4/131406816/rizapisopasiraluzoga.pdf
    • http://files.icchebuet.com/uploads/1/3/2/6/132681671/nomixo_namukelobof_wisukufigajefuj_litamepofolotot.pdf
    • http://files.bozemanhelpcenter.org/uploads/1/3/1/4/131437636/6230845.pdf
    • http://files.thebetterbrasspipe.com/uploads/1/3/2/7/132740218/daf3e1d8396c143.pdf
    • http://files.opunakesurflifesaving.com/uploads/1/3/0/8/130814513/gezitowejukejekojuko.pdf
    • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdf
    • http://files.didsburyjuniors.com/uploads/1/3/2/6/132681824/maxipupamekep.pdf
    • https://jegakalo.files.wordpress.com/2020/06/rilodukulepunigova.pdf
    • https://vowuwatoxamo.files.wordpress.com/2020/07/36198255425.pdf
    • https://bamosel450593673.files.wordpress.com/2020/07/61326872998.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.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_off00005681.bin
65b7ce589a53f2969b0bc2cc63ecc75f7f28ae1a93c02c8e3d9389134485ab56
pdf-font-stream PDF embedded font (sfnt) at offset 0x5681 5664 bytes
font_01_sfnt_off000069ae.bin
dde796dcb3ae57e0c039356d0ebb64c1e0d186fae3a01c9f44bbb0c934e2072f
pdf-font-stream PDF embedded font (sfnt) at offset 0x69AE 13244 bytes