Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74b6c77006ca1c9…

MALICIOUS

PDF

42.4 KB Created: 2020-08-13 23:38:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48e87e5b1e6107099c8ccb1b210a7858 SHA-1: 09c4650beb67a95d02a6e6a3c91d2a0981845891 SHA-256: e74b6c77006ca1c95984ab10c3a5b83d7c6e47bc9deb63460dca30ef198d44e4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=watermark+powerpoint+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. 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.ru/pify?keyword=watermark+powerpoint+pdf
    • http://files.fijianmermaid.com/uploads/1/3/0/8/130813528/3632766.pdf
    • http://files.livingdistinctivelives.org/uploads/1/3/0/7/130776016/tenor.pdf
    • http://files.maidonthemoonstainedglass.com/uploads/1/3/2/7/132740533/rapuxuneruzijan.pdf
    • http://files.envisiongalleries.com/uploads/1/3/0/8/130815095/1986a7693b9a.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/pocket_ref_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6598/files/5409428958.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1437/files/39064242575.pdf
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/zapefefez.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/guxoneliwakariwojolisevil.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/attach_photo_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/6573/7370/files/mumesu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76106621034.pdf
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/67907891176.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/85352944283.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/puxezaratifutino.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_off0000688f.bin
61e316f02597c5ef547a872ab89594b1cbea72c1b27304f4c1d4987e14e778f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x688F 5148 bytes
font_01_sfnt_off00007a16.bin
c74b5767f41703e293b6c8f9207324d3429fa6cffa7c47dbb79a1820bcd50502		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A16 10004 bytes

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