Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7257f383f5f0062…

MALICIOUS

PDF

42.3 KB Created: 2020-08-21 13:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe90fa526152611b3a7135eebbb2e9fe SHA-1: 529aefb3203b40f3680a91e415d8122a6a57b56f SHA-256: f7257f383f5f00624d473cadb7f8a83ffe7d76ac404438237ab3ad900ee67a51
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=guided+meditation+for+sleep+honest+guys`. This URL is presented within the document body, disguised as a meditation guide, indicating a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to shopify.com domains hosting other PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. 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.cc/pify?keyword=guided+meditation+for+sleep+honest+guys
    • http://kotirex.charveypublications.com/uploads/1/3/0/8/130873995/2633145.pdf
    • http://katabe.buffalocanyonretreat.com/uploads/1/3/2/7/132740930/72458.pdf
    • https://cdn.shop
    • https://cdn.shopify.com/s/files/1/0428/6211/7020/files/22501350854.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/scissor_cutting_practice.pdf
    • https://cdn.shopify.com/s/files/1/0437/1798/4405/files/20872487274.pdf
    • https://cdn.shopify.com/s/files/1/0440/3019/7910/files/59666096787.pdf
    • https://cdn.shopify.com/s/files/1/0432/8679/0304/files/18007032001.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/66161885952.pdf
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/lixezig.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/65326064148.pdf
    • https://cdn.shopify.com/s/files/1/0437/3381/1351/files/how_to_update_a_branch_with_master.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/how_to_make_animated_gif_android_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/canadian_citizenship_processing_time_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23631451812.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_off0000657b.bin
973cd6f774e4150ce27540ee9a0088b4ca21270f98319dd4cbd723c26780fc9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657B 5588 bytes
font_01_sfnt_off00007856.bin
6986f324ac371ab08b6885b61db00666c074833a6827721b13a19109cc774ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 10672 bytes

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