Malicious PDF — malware analysis report

Static analysis result for SHA-256 a227f6869f36e406…

MALICIOUS

PDF

44.1 KB Created: 2020-08-31 11:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 769dd3993b50f470a5ea8085b20ad1dd SHA-1: 8af4783ea9bf2e151833aaad3fb2495ab2afd04e SHA-256: a227f6869f36e40691f9a6e397ca8d72b050e0e58f27e3aa1f2eb90e4cdd6cbd
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=yale+forklift+serial+number+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though partially corrupted, contains the same redirector URL and a reference to a 'Yale forklift serial number guide', suggesting a lure to entice clicks. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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/wix?keyword=yale+forklift+serial+number+guide
    • https://cdn.shopify.com/s/files/1/0437/5409/4753/files/pejusum.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/65165615748.pdf
    • https://cdn.shopify.com/s/files/1/0432/3151/0690/files/dhl_division_del_norte.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8989/files/minecraft_mmorpg_server_with_classes_and_quests.pdf
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/22956356404.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/42584275354.pdf
    • https://cdn.shopify.com/s/files/1/0452/3737/1037/files/zoology_book_by_miller_harley_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/tokirokupabudokozezorup.pdf
    • https://static.usrfiles.com/ugd/f0f215_205722ea745b4742af1f8e3337a52e5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ab88d13d7d44d0288ab190757688216.pdf
    • https://static.usrfiles.com/ugd/b8c837_70ecd7a810a944bd9e73a6ad259d29e1.pdf
    • https://static.usrfiles.com/ugd/79e5df_540348e2cb0949038d7d642b0d80a71a.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/37059665363.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5592/files/27162176142.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_off00006d90.bin
c9c0fea8580f80a1f00220391165fababd6a003fa7286528e7c65b13d436933d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D90 5392 bytes
font_01_sfnt_off00007fcf.bin
63491c5f014fa9ba194e3b3cc116a4efe3d53f7092074ef255a61ee4ea2271e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCF 10588 bytes

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