Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb0ea15680f9a40…

MALICIOUS

PDF

37.3 KB Created: 2020-08-19 15:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62fb35c606f1c6ffeb0a5794692e874c SHA-1: 6448acc6d5feb3eddcc099ff31e31832f86f85ab SHA-256: eeb0ea15680f9a40faefbd6dace644746edbcaad7f26ed16ba707834773c2bb0
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=armitron+wr330ft+user+manual', is designed to redirect users to malicious infrastructure. The document also contains a PDF link farm, with one URL pointing to 'http://rexege.krisyforce.com/uploads/1/3/0/9/130969336/8036840.pdf', which is flagged as unknown. The overall attack pattern suggests a phishing lure using a fake user manual to trick users into visiting a malicious site.

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=armitron+wr330ft+user+manual
    • http://rexege.krisyforce.com/uploads/1/3/0/9/130969336/8036840.pdf
    • https://cdn.shopify.com/s/files/1/0435/6879/1713/files/swiss_alps_maps_and_visitor_information.pdf
    • https://cdn.shopify.com/s/files/1/0428/8036/8796/files/flyer_templates_free_google_docs.pdf
    • https://cdn.shopify.com/s/files/1/0431/2347/4583/files/manakovegesup.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/fokefupusemek.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/xapek.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/tegexetasowixidikekul.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/brittany_renner_judge_this_cover.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/worthy_of_it_all_chords_d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/english_vocabulary_list.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_off00005338.bin
7f895cc0b499634c9a6c04e098e2786adbd0fd354528a618704a06103e3133a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5338 5300 bytes
font_01_sfnt_off00006532.bin
c50a5a91ddcc5308fe4b1a73f2b3b4b471aa2ab47ebe87951513437cfd846b3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 10396 bytes

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