Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e633088c6c44cf9…

MALICIOUS

PDF

31.5 KB Created: 2020-08-01 13:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 813da94b2bf06d83800cede08ac744a1 SHA-1: 789dc5f0470c9c0f7ce9bbf3147411a09f384a33 SHA-256: 1e633088c6c44cf95ae913b07a25215f03600bdc3ee0c6ff0c6aad32f8168b51
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=www+att+com+olam'. Another critical heuristic identified a PDF link farm, indicating a large number of outbound links, many hosted on Shopify. The document body contains the same malicious URL, reinforcing the intent to redirect the user. The primary attack pattern involves luring the user through a deceptive link.

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=www+att+com+olam
    • http://files.antoniagoodfellow.com/uploads/1/3/1/1/131164130/9405296.pdf
    • http://files.georgeskisscollection.com/uploads/1/3/1/4/131437778/jajinus.pdf
    • http://files.triciacroomdoula.com/uploads/1/3/1/4/131406785/0de7abe8c.pdf
    • http://files.laurasprague.com/uploads/1/3/2/6/132682899/e899f186.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7253/files/63858190184.pdf
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/givakozukegowulepewe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/32107852724.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/81272023790.pdf
    • https://cdn.shopify.com/s/files/1/0432/7555/0876/files/44669273301.pdf
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/17703522588.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/64515997076.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedepisolutiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/vinawitelomoto.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/51996732235.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_off00004183.bin
bde00a1745e69e8d5065ec1bdd3fa812663d33fa45576d7f621129df4c8b0e07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4183 4776 bytes
font_01_sfnt_off000051cc.bin
1a441f26cf2627f4718d432493cc735a47765b67d5945f5de434ac9eb082d9f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51CC 9368 bytes

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