Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae05d98b29879fa…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 11:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bcd7311b72f5597aed4de006f553ca6 SHA-1: 1c1d1695a91b410ec9d83f9c022e1ec956e0c0cf SHA-256: fae05d98b29879fad3010f58761fdaea0b7b680a383352d2d9fb8425d8d9be05
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links points to a known malicious redirector. The document body contains text that appears to be obfuscated or corrupted, but the URL 'https://ttraff.com/pify?keyword=square+root+84' is clearly visible and flagged as malicious. The presence of numerous shopify.com links suggests an attempt to disguise malicious activity within seemingly benign hosting. 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/pify?keyword=square+root+84
    • http://files.feliciakeesing.com/uploads/1/3/1/4/131454719/zeladiju_dutoxuvusudalaf.pdf
    • http://files.bremertonfoodline.org/uploads/1/3/2/6/132695472/votofunotirap-silifefipefapif.pdf
    • http://files.pennengineeringpostframe.com/uploads/1/3/0/7/130739202/7898159.pdf
    • http://files.solutionsgurullc.com/uploads/1/3/1/3/131384468/61291e3b1.pdf
    • http://files.happywayhealing.com/uploads/1/3/1/4/131437778/2412377.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/larugogigejerabozavan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0360/0286/files/54746688797.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/kuxevofiloj.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/vulonixumenorir.pdf
    • https://cdn.shopify.com/s/files/1/0431/6354/9845/files/21265103167.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54729765263.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/xisisop.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/vewesasusu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/93016761548.pdf
    • https://cdn.shopify.com/s/files/1/0448/5254/3649/files/mac_missing_xcrun.pdf
    • https://cdn.shopify.com/s/files/1/0434/2566/1095/files/nifenajize.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_off00005ec8.bin
8d424204ff7d4f8c80244ce82d5d65adb59f9de1cf4d4ad38a5a6b0839ccbe78
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC8 4708 bytes
font_01_sfnt_off00006eda.bin
8b8cd68cd0c8b9278eac650be62e9f8ee9dce94fe7265114b9b98a62461fa78a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDA 9892 bytes
font_02_sfnt_off000090c5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x90C5 4324 bytes