Malicious PDF — malware analysis report

Static analysis result for SHA-256 950ceef7e91b40a7…

MALICIOUS

PDF

66.4 KB Created: 2020-08-10 10:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79b66e5592118144df422f38e7f8e04b SHA-1: 4ddee057a3a1f7fa12ede940bbbbc802f6e3ba44 SHA-256: 950ceef7e91b40a76204b591a7b20de1a8a669a1e43065f053bc2cbccfeaab60
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external PDF files hosted on various domains, including a link farm detected by heuristics. One of the primary links, 'https://ttraff.cc/pify?keyword=partitioned+matrix+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to drive traffic to malicious infrastructure through a deceptive link farm, likely for phishing or malware distribution.

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=partitioned+matrix+pdf
    • http://files.wolfhunterjjc.com/uploads/1/3/1/1/131164097/rogojore_sabefizaxe_kuzix.pdf
    • http://files.olivia-meraki.com/uploads/1/3/1/4/131408204/af17442d.pdf
    • http://files.thepeterboroughparkwayclubs.co.uk/uploads/1/3/1/3/131384589/pibawifidesid_mukal_fasakopivoto.pdf
    • https://cdn.shopify.com/s/files/1/0435/6685/8408/files/27768072213.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/soxajidigotugawiwafovusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/love_divine_all_loves_excelling_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/biasing_of_pn_junction_diode.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/taqueria_arandas_menu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5228/3542/files/73065647761.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/kokipozaxilabimezopido.pdf
    • https://cdn.shopify.com/s/files/1/0437/3181/2504/files/38254620717.pdf
    • https://cdn.shopify.com/s/files/1/0428/2089/4886/files/tipujaworikugobimupuso.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_off0000c8a7.bin
5aa51dc1e1c67bf15ce364e2bff7005b47be23b7e6031c2bf76b6e118a061fa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A7 5044 bytes
font_01_sfnt_off0000d9c1.bin
988993942ba67a72519e00bcc12fb980fd60467a904a3b80379a8674bd842a65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C1 10460 bytes

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