Malicious PDF — malware analysis report

Static analysis result for SHA-256 52cf9880d0035ea5…

MALICIOUS

PDF

43.5 KB Created: 2020-08-17 17:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35db950e389416ff84b8cc4cd4445ad3 SHA-1: f3ce5527360f6a902593c83f45cf1095d6c2aa58 SHA-256: 52cf9880d0035ea50ff88145e12511f85f47a87967121f4772b866c8a2b40e12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=partnership+deed+format+pakistan+pdf'. The document body and heuristic firings indicate a lure related to payment or bank detail changes, a common Business Email Compromise tactic. The presence of a malicious redirector suggests the intent is to lead the user to a site that may host further malicious content or phishing forms.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.ru/pify?keyword=partnership+deed+format+pakistan+pdf
    • http://gudez.nomad-mercantile.com/uploads/1/3/1/3/131379732/zapafon-galukifoked-fikegerokawep.pdf
    • http://tikur.acracrew.org/uploads/1/3/2/6/132695471/fujotezego-zijuwixazo-nadekiviri.pdf
    • http://famed.gracefamilysudbury.com/uploads/1/3/1/4/131406082/rovoxutetix-vokusogexezunu-xozatebu.pdf
    • http://tujujijo.bathswimtherapy.org.uk/uploads/1/3/1/1/131164574/3566573.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/dopuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/tugob.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/ziposifimilubalevirovavo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegofegomena.pdf
    • https://cdn.shopify.com/s/files/1/0433/3033/8966/files/shenmue_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53551688275.pdf
    • https://cdn.shopify.com/s/files/1/0433/2657/0664/files/76494982681.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/8374646327.pdf
    • https://cdn.shopify.com/s/files/1/0434/8634/7414/files/ffx_expert_sphere_grid_guide.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_off00005e7e.bin
8d8251b97fc67db87b14599c249b2b99cfa6fc6cebb24d1c8a114efdb4df7dbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7E 5100 bytes
font_01_sfnt_off00006f9c.bin
4f64227e9f86055461b23b016594a76db29e59023cad6df7b2fdf8e9561691f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9C 10420 bytes
font_02_sfnt_off0000931a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x931A 4324 bytes