Malicious PDF — malware analysis report

Static analysis result for SHA-256 9996a06190e45928…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 04:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ee8a0a661cf8c332bb376dd26077fec SHA-1: f11b20228232021753d9e080433db5259f021685 SHA-256: 9996a06190e45928edf98781043d968d2b50561fa7799eedfd1ad1716ef5ea89
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'China visa application form' and embeds multiple links. One of these links, `https://ttraff.com/pify?keyword=china+visa+application+form+2019+bangladesh`, is identified as a malicious redirector. The document also functions as a link farm, directing users to various PDF files hosted on Shopify, with one such link being `https://cdn.shopify.com/s/files/1/0429/9050/2051/files/rexurilujawuma.pdf`. The presence of a malicious redirector and the invoice/payment lure suggest a phishing or scam attempt.

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=china+visa+application+form+2019+bangladesh
    • http://files.andrewanddeannafriesen.org/uploads/1/3/1/6/131636651/zapewijug.pdf
    • http://tipunos.chemungcountyswcd.net/uploads/1/3/1/8/131857920/7717774816a4.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/rexurilujawuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/0981/8272/files/lacassine_special_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/zitusugigisafan.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/15725912209.pdf
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/zubol.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/dojobetigisij.pdf
    • https://cdn.shopify.com/s/files/1/0439/6482/5758/files/jawujovugenimod.pdf
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/bezivarijawajuki.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/ap_inter_1st_year_sanskrit_text_book_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/boy_scout_lifesaving_merit_badge_worksheet.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_off00006511.bin
f466e21a27e76bee9e38f927bde587af2764d512c544bc71a0d07b932e0077aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 6156 bytes
font_01_sfnt_off000079ce.bin
05e7ab28e14e08f56a528e25cc91e9102ca79b0025b0e571e1691830afe64168		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79CE 9808 bytes

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