Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30b02ca8e5613ba…

MALICIOUS

PDF

42.9 KB Created: 2020-08-04 07:17:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdcd2ed503ac862450c6b703b6cff6c2 SHA-1: 8e55b816b4ded9efbfd97c8f0b525ff0a526c448 SHA-256: e30b02ca8e5613baad0f0c95a35f7b3824c49122caf635a4021c1b26302efe2b
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is further disguised by a 'download button' lure. The document body, though heavily obfuscated, contains the URL that likely initiated the redirection. No scripts were extracted from this sample.

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.com/pify?keyword=niv+bible+dictionary+pdf
    • http://files.bgmassociates.net/uploads/1/3/0/8/130813988/mawulamomifula.pdf
    • http://files.movementandmeaning.com/uploads/1/3/0/7/130739011/gokitoxisevuvigenago.pdf
    • http://files.chinookcyclingclub.com/uploads/1/3/1/1/131164383/xolagu.pdf
    • http://pogefe.bewisecomputer.com/uploads/1/3/1/4/131483371/e3574a99ecaf9.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/60727641912.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/lazimulilexaro.pdf
    • https://cdn.shopify.com/s/files/1/0437/6929/9098/files/12662130786.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/97083722064.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/risozulunabiwetuxamag.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/jepasolanejuxeva.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/9401610684.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/96987945834.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/91379272517.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/67541925337.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5276/files/66486179881.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_off00005be6.bin
c3184c6711be9087f9ae7288936481625885273c7cf7431c63cbb25e70f78266
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE6 5032 bytes
font_01_sfnt_off00006d0e.bin
f8c59a022b1aecb2e6e4cfb85a2d7d2b6fc26dba13b018cd31bb9669b6247cee
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0E 9996 bytes
font_02_sfnt_off00008f3f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3F 4324 bytes