Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd1ed5a1329658de…

MALICIOUS

PDF

48.0 KB Created: 2020-08-05 11:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff6a7adcd8be6d4dd136a692a4c5ebd9 SHA-1: 97507ebcf5c7dac96bc0a77616f9f532c2bf5ee6 SHA-256: fd1ed5a1329658de641d1ccd0643bac3a973dc29cb036cd74bc69e41382dee0e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=dibujarte+pdf+coleccion'. Additionally, it exhibits a PDF SEO link farm heuristic, with numerous links to PDFs hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the malicious URL. The primary attack pattern involves directing users to malicious infrastructure through embedded links.

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=dibujarte+pdf+coleccion
    • http://files.haywardfitnessfanatics.com/uploads/1/3/0/8/130874413/dugen.pdf
    • http://fidure.duffysdelivers.com/uploads/1/3/1/4/131482975/xuvosuniludus-wazizaganube.pdf
    • http://files.leap-of-faith.blog/uploads/1/3/1/4/131437799/968336ee5ff836b.pdf
    • http://files.niacurriculum.com/uploads/1/3/1/3/131398419/a3f64.pdf
    • http://files.haywardfitne
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6735074847.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/29982987231.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/vovazinesubudapab.pdf
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/90197625268.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/vajupekixiwipabe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9427/0371/files/13463362921.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/jufasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0361/6165/files/74483583549.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/2628473619.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/zupifajara.pdf
    • https://cdn.shopify.com/s/files/1/0436/4202/8182/files/56960516633.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/79617944993.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/nojaxorigemajusaga.pdf
    • https://cdn.shopify.com/s/files/1/0449/0412/0475/files/how_to_grow_your_discord_server.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_off00006bf8.bin
a821eebfd0568568c5a1bb3334818b4f6d1974801470055a949281c0a5ae8be4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF8 5068 bytes
font_01_sfnt_off00007d3b.bin
61cbcfa92a0d0f42826408141183dbd5e194692db2a29db986def8739efd3908
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3B 11840 bytes
font_02_sfnt_off0000a323.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA323 4324 bytes