Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2e73957b6cf02a…

MALICIOUS

PDF

44.2 KB Created: 2020-08-10 16:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50fa572891f67a7f0c441bc025d1e402 SHA-1: 12c5b66066de412719d24f4a9b81d764c274d311 SHA-256: af2e73957b6cf02a027054d4d888f7a5df8ed553fa2dbf377219ba863d94c11c
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 'ttraff.com', which is designed to lure users with a 'pdf file free download pc' keyword. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though partially corrupted, contains the same deceptive URL, reinforcing the social engineering attempt to trick users into clicking the malicious link for a supposed free 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.com/pify?keyword=pdf+file+free+download+pc
    • http://lubunep.topchoiceinspectors.com/uploads/1/3/1/3/131379803/fuxuv-gavisilu-demaxelojimon-gezolixefimita.pdf
    • http://files.severnwildlifecarvers.net/uploads/1/3/1/6/131606652/wilepot-wagagunasilolas.pdf
    • http://files.adultdaycenter.org/uploads/1/3/1/1/131163879/3329193.pdf
    • http://files.occidentallodge436.com/uploads/1/3/2/7/132740277/4527271.pdf
    • http://lubunep.topchoiceinspectors.com/uploads/1/3/1/3/131379803/fuxuv-gavisilu-demaxelojim
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/58822191000.pdf
    • https://cdn.shopify.com/s/files/1/0436/7699/1653/files/64708404501.pdf
    • https://cdn.shopify.com/s/files/1/0429/3997/3788/files/wezugubawubiwowir.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/69975520555.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/rerujepitasasikaxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/joxuka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56666804065.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6685/files/o_que__albinismo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/digestive_system_test_questions.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/caderno_de_caligrafia_para_baixar.pdf
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/google_snake_bot.pdf
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/tasonuwurutudadotipe.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_off00006f6c.bin
d13305219f363835ff231a44c9a3e2052368e93342bacc1f47731ac72dce8fd7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6C 5064 bytes
font_01_sfnt_off000080be.bin
b66a67985ef26bcf6f0ccced049ce1a4353e1633e8582e1bd6a9d2d2f9af4eab
pdf-font-stream PDF embedded font (sfnt) at offset 0x80BE 10192 bytes