Malicious PDF — malware analysis report

Static analysis result for SHA-256 783a60e4108424bc…

MALICIOUS

PDF

46.0 KB Created: 2020-08-08 15:22:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90313049f6af8e14fe50109bf6e16578 SHA-1: fbdd9d0b443f62db085207d372b48c59a42f3183 SHA-256: 783a60e4108424bcc3c93a52bb3b7bfc16b24bc84b99a58d8a085fa8d14b0270
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to lure users to malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=adinkra+symbols+list+pdf, which is likely used to redirect users to a phishing or malware distribution site.

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=adinkra+symbols+list+pdf
    • http://files.breesepickel.com/uploads/1/3/0/7/130775363/feginegobirilab-fitigode.pdf
    • http://files.cathhowe.com/uploads/1/3/1/4/131453636/69c200.pdf
    • http://files.strips.ie/uploads/1/3/1/4/131438499/pevuterunuv_dofubetimirupu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/93359771439.pdf
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/pastel_yellow_hex.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9384/files/63107446470.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/87154444168.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/65259168525.pdf
    • https://cdn.shopify.com/s/files/1/0435/9028/7517/files/simply_keto_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/test_of_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/chemotherapy_definition.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/wigesepiruxas.pdf
    • https://cdn.shopify.com/s/files/1/0439/6358/0574/files/79876279662.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/10096876781.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_off000068e4.bin
5fbda9b646ed943e4ca7c82181837ecf88e845d1dc33669a4707abd8d1e4384c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E4 5152 bytes
font_01_sfnt_off00007a41.bin
bfb6dad6266cfd846fa3cc96b47bf6c6be33a9facf7c2b7aa87a0eb173f03ffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A41 10080 bytes
font_02_sfnt_off00009cce.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCE 4324 bytes

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