Malicious PDF — malware analysis report

Static analysis result for SHA-256 b78307aa0007ad1a…

MALICIOUS

PDF

46.7 KB Created: 2020-08-09 22:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70b1c724ccf01ea9c7769adb37f6b061 SHA-1: 92ddd0f56c4cf21890c88e7c810a306699c665bc SHA-256: b78307aa0007ad1ac45f6b0a7a6d2b5ea7396ced4a7eb3ce1056a50f7bc8f066
120 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 'https://ttraff.com/pify?keyword=etymology+dictionary+pdf+download'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. 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.com/pify?keyword=etymology+dictionary+pdf+download
    • http://files.magnusaircraftinc.com/uploads/1/3/0/7/130740138/nepula.pdf
    • http://files.thebodyshoptbt.com/uploads/1/3/0/7/130739982/f3ee88ca.pdf
    • http://files.cookingsustainably.com/uploads/1/3/0/8/130813095/liboxere_xabevobesisa_weloje_likato.pdf
    • https://cdn.shopify.com/s/files/1/0427/4552/8487/files/91285195220.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/novubaxuledigojodimofaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/28765397862.pdf
    • https://cdn.shopify.com/s/files/1/0434/0400/1443/files/automatismos_electricos_cableados_y_programados.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/dekotiregarigoxitubowogez.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/wovex.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/97741316284.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/jejepekomajamekunakogar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/donebowovalodibogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/sejijane.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/domek.pdf
    • https://cdn.shopify.com/s/files/1/0429/9259/9193/files/97459880162.pdf
    • https://cdn.shopify.com/s/files/1/0434/6894/7616/files/47221619050.pdf
    • https://cdn.shopify.com/s/files/1/0434/6504/8214/files/mijodakefenedenaloro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c06.bin
9469d3f1cd0358c105313c3ec9ff64ca38b1873b424fdc82071458a9ea8b5092
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C06 5120 bytes
font_01_sfnt_off00007d6a.bin
68f1b11e4b58c8baa5e4d433dd024e020b077a43cae40abce97b05b3b0bd4f74
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6A 10096 bytes
font_02_sfnt_off00009fed.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FED 4324 bytes