Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3220555a06fb5f…

MALICIOUS

PDF

59.7 KB Created: 2020-08-23 08:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e74bee057796f301188fc434f896568f SHA-1: 94e075efba823d9513eaade511925ba1d2445307 SHA-256: fa3220555a06fb5ff1f9b9176e569bc0a48e9b68516ebf2cece61edfb29fb5e2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.ru/pify?keyword=date+sheet+hpu+1st+sem+2018', which is flagged as malicious. The presence of a link farm heuristic further suggests an attempt to distribute malicious content or manipulate search engine results.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=date+sheet+hpu+1st+sem+2018
    • http://vitotipow.rattlerbands.org/uploads/1/3/2/6/132681218/6155ee6ba144a91.pdf
    • http://files.rainforestab.ca/uploads/1/3/2/6/132681698/valar.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/27078867453.pdf
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/46136738619.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/tafsira_quran_afaan_oromoo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9605/4690/files/72529096765.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/manual_de_taller_chevrolet_captiva_2009.pdf
    • https://cdn.shopify.com/s/files/1/0437/5897/7178/files/jawajos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/the_bedford_reader_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/5_o_clock_in_the_morning_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/72363655024.pdf
    • https://cdn.shopify.com/s/files/1/0451/8179/6503/files/rukesute.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/classifying_rational_and_irrational_numbers.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_off00008a76.bin
900fc5dc029c96d83d41f7b14e94701beedf3c3eeb2e8e7b2fa03a5fec68e49f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A76 5448 bytes
font_01_sfnt_off00009ce8.bin
9ce9fbac73432efc09b6919a0dd9dea112c24a6ea729ed4b9579eed89c8e78b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE8 15156 bytes
font_02_sfnt_off0000cbcb.bin
ff456598a0d5a628a83946827f5baf670cf3ce7f7629fd0cf03535faa26034ff
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCB 16300 bytes