Malicious PDF — malware analysis report

Static analysis result for SHA-256 9185679c9f05435a…

MALICIOUS

PDF

44.8 KB Created: 2020-08-07 15:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fdf4ef49bb600f902fd55dc34e29bf8 SHA-1: 2655709091757edcb0701b6023e0f583a8160530 SHA-256: 9185679c9f05435a01a13682e414638a450ef9a53cfa4652fb59d4ff26240085
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though obfuscated, contains keywords related to accounting and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous links to Shopify-hosted PDFs indicates an attempt to leverage legitimate platforms for SEO poisoning or to disguise malicious intent.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=accounting+adjusting+entries+examples+pdf
    • http://files.sharonmckenzieartist.com/uploads/1/3/0/7/130738673/f3d4a.pdf
    • http://files.aulac-restaurant.com.au/uploads/1/3/1/4/131411542/2acfc37d.pdf
    • http://files.miltronicsinc.com/uploads/1/3/1/8/131857540/844106.pdf
    • http://vufevi.ajconsultingcompany.com/uploads/1/3/2/6/132682787/xogunofoxawefobure.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6165/files/20652499137.pdf
    • https://cdn.shopify.com/s/files/1/0438/9427/6264/files/color_by_number.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/70646417864.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/16524798515.pdf
    • https://cdn.shopify.com/s/files/1/0434/3676/9437/files/list_of_ethnicities.pdf
    • https://cdn.shopify.com/s/files/1/0434/6288/5541/files/megiburipatapufafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/mokofimepab.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/learn_binary_numbers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15074065918.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/gastroenteritis_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/pogozanopofevak.pdf
    • https://cdn.shopify.com/s/files/1/0435/8301/3023/files/pontiac_head_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/sixeni.pdf
    • https://cdn.shopify.com/s/files/1/0434/9706/2564/files/sarubasivavegekawes.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_off00006f8e.bin
79ec0d4804522fa258ce24e4f5979364fead016e1bf1514e51c8b699bfab146b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 5608 bytes
font_01_sfnt_off0000829a.bin
640ef39d3f98a11c43a866dec7fc18be889a5b75859afdb37ebf29015aba1296
pdf-font-stream PDF embedded font (sfnt) at offset 0x829A 10448 bytes