Malicious PDF — malware analysis report

Static analysis result for SHA-256 552a532570f7174d…

MALICIOUS

PDF

58.3 KB Created: 2020-08-08 05:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cade75eec27660ad7fb6f87d92dff216 SHA-1: 6613c2dae5edec05d27c4e3ac61a4e886c3dee88 SHA-256: 552a532570f7174d353159b9aecd675246d8edf105914c4df0320f57985bb8c4
128 Risk Score

Malware Insights

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

The PDF contains a lure related to accounting principles and free downloads, as indicated by the document body and the SE_INVOICE_LURE heuristic. It embeds multiple links, with one critical heuristic firing on a link to a known malicious redirector infrastructure (ttraff.cc). This redirector likely leads to further malicious content or exploits. The PDF also contains a link farm pointing to various Shopify-hosted PDFs, one of which is also listed as an IOC.

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.cc/pify?keyword=accounting+principles+10th+edition+solutions+pdf+free+download
    • http://files.avimursolutions.com/uploads/1/3/0/7/130775245/xosakov_duvoninadoviv_juvavu.pdf
    • http://files.newlookwindowcleaning.co.uk/uploads/1/3/1/1/131164479/kosulugotinivo.pdf
    • http://matolikup.emilyervinphotography.com/uploads/1/3/1/3/131384169/sujekuxom.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5799/files/kojewetipojanoluzojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/zexisujumabuweguka.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/orquidea_negra_neil_gaiman.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/binarusevifero.pdf
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/convert_to_word_application_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/nenifevarivipage.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9010/files/66438325242.pdf
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/30875179010.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/zovawitibilij.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/13718686494.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/tunevuwejutenoranexonuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/lozopidivadorizorega.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_off00008a3a.bin
48047d15087a078b2781b5ad21f76e4aae627bfb5254a4c5dcf2fd5644e42c61
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3A 5576 bytes
font_01_sfnt_off00009d39.bin
5471da4971fded3c131c948f2075f2ed4a473cd396160d7caede7697322a81f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D39 15372 bytes
font_02_sfnt_off0000cd34.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD34 4324 bytes