Malicious PDF — malware analysis report

Static analysis result for SHA-256 d750e22bcb2a55e3…

MALICIOUS

PDF

51.4 KB Created: 2020-08-13 23:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1358b83a7efdc658ab7fb60099fab849 SHA-1: 4ac9913da1c7c936accd3389e6638c14382e9af2 SHA-256: d750e22bcb2a55e3eb6bfefa4640fa6cc3108fdf17e1988d0a60450534c766d4
128 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 ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, but some pointing to potentially malicious domains. The presence of a "download" call-to-action further supports a malicious intent to trick the user into clicking the link. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bunny+ears+template+free
    • http://gogov.laniefrick.com/uploads/1/3/0/7/130776644/6a79b.pdf
    • http://files.backcountrywinery.com/uploads/1/3/1/6/131606453/752bbf4.pdf
    • http://files.4bardworkingdogs.com/uploads/1/3/2/6/132681150/zojif-pekerasus.pdf
    • http://files.nt-307.com/uploads/1/3/2/3/132302892/dac89e7ce2184ad.pdf
    • http://files.foreverhereforyou.com/uploads/1/3/0/9/130969166/tefurewemowef_tisawipafimubil_ledafitetujuxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4863/files/12572977471.pdf
    • https://cdn.shopify.com/s/files/1/0439/1872/1192/files/adverbs_of_frequency_exercises_perfect_english_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/4114186832.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/kubolalulovew.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0055/files/panama_city_beach_water_temp.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/xaveporoxibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/22081053531.pdf
    • https://cdn.shopify.com/s/files/1/0432/2040/2343/files/jeriluxumexi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/pinufebef.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/27351803242.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/packing_slip_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5142/files/56527746585.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_off00008b8d.bin
4fe5bc9e6d2598d836f37374a9799cbd41e903160f505ae762dee59945c2daff
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8D 5200 bytes
font_01_sfnt_off00009d33.bin
54dc1f807dab9bcb1f8c4f2b57dd15afc1a78b54a7218463e86bd32e5fdc6f7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D33 10312 bytes