Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9d20cb7bb20f5c…

MALICIOUS

PDF

53.8 KB Created: 2020-08-11 13:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9477e0814f5a25b48319fc1fa48230a9 SHA-1: e05a3a7d29b22f1d6acf6424cd5f610802d90a81 SHA-256: 9e9d20cb7bb20f5c53cd9bf3d97caf1c2846cce1dc5c81d00fcb3b4fd187d223
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and other unknown hosts. One critical heuristic identified a malicious redirector link, which is the primary IOC. The document body contains garbled text but includes the same malicious URL and several benign-looking PDF download links, likely intended to obscure the malicious intent. 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.cc/pify?keyword=life+application+study+bible+nkjv+pdf+free+download
    • http://files.impactwashtenaw.com/uploads/1/3/1/3/131379792/vovudugo_jubadife_kitomizovib.pdf
    • http://negoju.twistedclovers.com/uploads/1/3/2/8/132814930/5f380cbc427e.pdf
    • http://files.mandywoods.com/uploads/1/3/1/4/131438641/jelivonuvu-seroj.pdf
    • http://files.nationalsupremecouncil.com/uploads/1/3/0/8/130874045/nikagemabolo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/vandercook_trumpet_solos.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/weruz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/koxosujamokaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/7070361704.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/pdf_to_word_converter_free_download_software_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/society_and_culture_introduction_to_sociology_and_anthropology.pdf
    • https://cdn.shopify.com/s/files/1/0438/1406/0189/files/bleak_house_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3880/files/mivawaseb.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/14545900228.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0591/files/mavogalirarezeloje.pdf
    • https://cdn.shopify.com/s/files/1/0432/6863/6840/files/93958550132.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/8319963753.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/66307887493.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_off00008791.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8791 2828 bytes
font_01_sfnt_off0000918c.bin
7400d12bf35b239cfc711f846c316501326047dbf46ef5c36c5e2f6920ce64ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x918C 5624 bytes
font_02_sfnt_off0000a4d7.bin
759db220230500549433fa50ee5d2ae75e3e52d9459f9a101e5db8049e8542ef
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4D7 10096 bytes