Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a4d02a54aede26…

MALICIOUS

PDF

84.7 KB Created: 2020-08-11 01:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f35714a587636dbb053f751896ce08e SHA-1: 52041a0198bbbd58b6677d31f5a782f25a6badeb SHA-256: 43a4d02a54aede26b1d3f5c32aa3a8a06852a6641071d4f2dc6e60f783c5f782
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious payload or phishing page. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack vector.

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=common+european+framework+of+reference+for+languages+cefr+pdf
    • http://files.udderlygorgeous.com/uploads/1/3/2/6/132681826/kekojuzakidegutew.pdf
    • http://files.lindymaine.com/uploads/1/3/0/8/130874090/dafizekezi.pdf
    • http://files.clermontlawnservice.com/uploads/1/3/1/6/131606467/pizufekoj.pdf
    • http://files.sheilakitchen.com/uploads/1/3/1/6/131607404/vagud.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/89557762992.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/4chan_gif_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0439/1901/6104/files/tetaxitifatozo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/31133965185.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0432/8652/8155/files/cease_and_desist_letter_uk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9629/4051/files/93543739578.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/dominion_season_1_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/temerarios_mix_viejitas_pero_bonitas.pdf
    • https://cdn.shopify.com/s/files/1/0438/6773/4171/files/brainwashing_the_science_of_thought_control_kathleen_taylor.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/59246875472.pdf
    • https://cdn.shopify.com/s/files/1/0432/1391/4276/files/traducteur_anglais_francais_document.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_off0000cf09.bin
46797cb42f577d8413ec6e84bfa1355aaf8b1c18aeb17f97c437e65f47405a5d
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF09 11012 bytes
font_01_sfnt_off0000f353.bin
1e7cd2efd95e803af2e9bd75833902ab56fbe5ac71fba15d2739cc550458927b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF353 5536 bytes
font_02_sfnt_off00010626.bin
17fe9e7ffe527649bb07a5e65001b243b33f6b3765da081b2522abc9edaab53c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10626 21072 bytes