Malicious PDF — malware analysis report

Static analysis result for SHA-256 b316e0d93ab75c6c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-21 22:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84f70ccdf2f9a903d5e6e49116d08f5d SHA-1: f65be194891b104489dc767fd7c23e805771cb19 SHA-256: b316e0d93ab75c6c4195ea319597baa8a6be52b54a96ab8305ca77eb05b1bc00
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=best+screen+recorder+for+pc+free`. This URL is embedded within the document body, suggesting a lure to trick users into visiting a potentially harmful site. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary intent appears to be directing users to malicious infrastructure under the guise of providing software information.

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=best+screen+recorder+for+pc+free
    • http://xezegova.heritagegspkennels.com/uploads/1/3/0/8/130814328/jatumala_punodiwopazoru_watezavuxa.pdf
    • http://belidikal.derekdbass.com/uploads/1/3/1/0/131070450/judukapurelivu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/82835091548.pdf
    • https://cdn.shopify.com/s/files/1/0434/5344/8358/files/fujoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0334/6078/files/vatican_guided_tour_length.pdf
    • https://cdn.shopify.com/s/files/1/0428/2908/6876/files/54323661228.pdf
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/31912445851.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/87872229934.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/63538199641.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/refetulajevig.pdf
    • https://cdn.shopify.com/s/files/1/0429/2545/7574/files/77566862381.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/fonunewakexavekew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4449/files/ranulu.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_off0000618a.bin
992226ca36f6e19e0969ea5a5753090f3010f5090498d810cf4761ef1935e224		 pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 4956 bytes
font_01_sfnt_off00007275.bin
4b1237bbfa0f115b3a7477f96b5e708be33faf422047fb3ca764fec5240a2643		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7275 10496 bytes

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