Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3081a944289a197…

MALICIOUS

PDF

70.4 KB Created: 2020-08-14 15:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89d765789e8327a9ac41a395074eb7ca SHA-1: 4be6673d815d4ed57b20bb4d965648da03eea3a3 SHA-256: c3081a944289a1977092019ef30410911c47fff4c72293e262ae03fd3570aa81
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=ms+access+database+templates+freeware'. This URL is designed to lure users with a seemingly relevant search term. The file also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack vector appears to be social engineering through a deceptive link.

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=ms+access+database+templates+freeware
    • http://tokusowa.remycenard.com/uploads/1/3/2/8/132814930/6fe029f5.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/dekulokubudodeso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/ulquiorra_x_reader.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91337380597.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/the_new_oxford_annotated_bible_with_apocrypha_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/wujukomani.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/2007_vw_jetta_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/fanitoduzeloguzotirarew.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/42515422207.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/7287311612.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/30758444209.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_off0000c3c2.bin
a617ab1911cf043bb0d81ae9caf81c56a4bcfbb8126df5ecc0b08f09f78743fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C2 5064 bytes
font_01_sfnt_off0000d504.bin
41f2dc0b2c38c76813410a44886f4ad350e1a5928313c045c4700d6672419c19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD504 13000 bytes
font_02_sfnt_off0000fe59.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE59 4324 bytes

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