Malicious PDF — malware analysis report

Static analysis result for SHA-256 994c3d623de572fe…

MALICIOUS

PDF

46.1 KB Created: 2020-08-23 02:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 902d14a19cea1f0eaa5a7f9164a12485 SHA-1: dd4ca5a0787b80f90f983501e8123fad575550e3 SHA-256: 994c3d623de572fef8a7af9bfb85c3af333fba37cf3258c97492ce761cd148e5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the text "Cost of quality reporting ppt" and the malicious URL. This suggests the document's primary purpose is to trick the user into visiting the redirector URL, likely leading to further malicious content or downloads.

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=cost+of+quality+reporting+ppt
    • http://demav.thesteamrocket.com/uploads/1/3/1/6/131636725/wagilenoxuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/43601721949.pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7143/files/kunariwekeridunakisila.pdf
    • https://cdn.shopify.com/s/files/1/0429/0206/1215/files/pivizuf.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/20936234325.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/test_credit_card_numbers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/53913508913.pdf
    • https://cdn.shopify.com/s/files/1/0435/1108/7259/files/clash_of_clans_apk_indir_son_srm.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/nagonobojepadiwob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9646434013.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdf
    • https://cdn.shopify.com/s/files/1/0440/6309/6984/files/surubibexubemubejegumige.pdf
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/39906111363.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_off000075ee.bin
c139190a461d97933f4a60d471baf9fa71e294e2d4d6b5a7b1eaef7fa9f7c90b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75EE 5204 bytes
font_01_sfnt_off000087b8.bin
cbc70f42ce44eb62ccce60d9ba29277231921b50cdb6a3ff5d64db55bbff265a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87B8 10692 bytes

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