Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fbf48af2fcdf37…

MALICIOUS

PDF

66.2 KB Created: 2020-08-07 23:37:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92f3bac1e49c5f336293ac890697c1b4 SHA-1: 67f9bb55a05781036d1a3095fb23b4fbed23a241 SHA-256: b7fbf48af2fcdf37a927c3ae1a3b5470b7100d063c30b4c2825cf1d6ae334759
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=email+architecture+in+computer+networks+pdf', indicating a lure to download a PDF. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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/pify?keyword=email+architecture+in+computer+networks+pdf
    • http://files.mylaraonline.com/uploads/1/3/0/7/130739225/b1d0144dd929c.pdf
    • http://files.senoradaniels.com/uploads/1/3/0/7/130776720/purafevol_sidejileluxaf_tanox_sivug.pdf
    • http://xuxisi.phase2blogs.com/uploads/1/3/1/4/131482853/273ad2cdd6.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7046/files/magijanobizorajovalar.pdf
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/85609794849.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/18953385383.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4744/files/el_pollo_loco_chicken_breast_skinless.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/lofarabiluwazozu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5837/8392/files/vexusogatuvedidil.pdf
    • https://cdn.shopify.com/s/files/1/0428/5507/1900/files/dofogudum.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/future_dirty_sprite_2_zippyshare.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/blessed_be_your_name_chords_g.pdf
    • https://cdn.shopify.com/s/files/1/0431/1154/7037/files/powufi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3908/8022/files/98090582808.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/cg_police_written_exam_date_2020.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_off0000b9f7.bin
eaae06763ef270d7f92ac42f61aebadfd9012b63dd247bebdafc31611c46cd4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F7 5508 bytes
font_01_sfnt_off0000cc96.bin
dcd532ca07875e07d117b15e225af08ef19177109146b2a8fb9b09d8cd94f4ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC96 14820 bytes

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