Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a64368e09e1b56e…

MALICIOUS

PDF

61.5 KB Created: 2020-08-11 04:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7966a7b3c75223b2345257f0cf9a609b SHA-1: 71b70aa0a6c08cf4c06b075461e3479d4e9a911a SHA-256: 9a64368e09e1b56ed5d33e87c8bc9c18d812132794c29f0c551b66e558eb48e1
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=akutagawa+short+stories+pdf', which is likely intended to deceive the user into downloading a malicious file. The presence of many external PDF links suggests a link farm or SEO poisoning tactic to increase visibility and lure victims.

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/pify?keyword=akutagawa+short+stories+pdf
    • http://files.mayaartcenter.com/uploads/1/3/1/1/131163898/nowebez.pdf
    • http://files.anthonybeastmode.com/uploads/1/3/0/7/130775977/nuxiponilutudimelaj.pdf
    • http://visemix.majesticrc.us/uploads/1/3/0/8/130813528/silarefuzizig.pdf
    • http://files.dscottcurryatty.com/uploads/1/3/1/4/131407802/xodobu.pdf
    • http://files.mrsmeltabargersclass.com/uploads/1/3/0/7/130776509/4983897.pdf
    • https://cdn.shopify.com/s/files/1/0433/8227/6257/files/2253467786.pdf
    • https://cdn.shopify.com/s/files/1/0438/7530/3592/files/barinilerojuxeke.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/bewonelepebikenim.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/66054780624.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/baxijabedozureruxexe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/named_ranges_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38659434623.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/fojipinina.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91428743782.pdf
    • https://cdn.shopify.com/s/files/1/0434/1537/1932/files/dovakalujujonufuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/formasi_cpns_papua_barat.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_off0000b3c2.bin
07fc56d1714a85084beec0c825a4f697a4ab56f0de0c9f1d3ff19212043ae826		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C2 5416 bytes
font_01_sfnt_off0000c63a.bin
b7cc5ff5175c704fe92add5853b085a79919051655d7bd65aa61b1bccd64d8dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC63A 10212 bytes

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