Malicious PDF — malware analysis report

Static analysis result for SHA-256 43544531bfbea72a…

MALICIOUS

PDF

45.2 KB Created: 2020-08-18 17:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68bc227562e32804dcf780a92a3be2de SHA-1: 712385487b79f4b0733c27e0db593dabdae7164f SHA-256: 43544531bfbea72aa6979abd9ee384e21c2510bcd03a2ff943aef62827883d33
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is flagged as malicious. It also features a link farm of numerous PDFs hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The presence of a 'download' button lure further supports the malicious intent of directing users to potentially harmful content. No scripts were extracted from this sample.

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.com/pify?keyword=functional+requirement+specification+document+format
    • http://files.belleandboy.com/uploads/1/3/0/7/130776130/1a1ec136.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/xupetavufatira.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8469/files/magnetic_current.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6426/files/tns_believe_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/tomidofakurifajino.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/bangla_to_english_translation_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5932/2773/files/18807186771.pdf
    • https://cdn.shopify.com/s/files/1/0432/4153/7696/files/35460166489.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/jodasuvapudin.pdf
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/43846150610.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/24861821316.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_off00006485.bin
c438e49ef53af0f2ca7b52c8320482b328430c0d2ea6ac1bebab4da6e8d577dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6485 5264 bytes
font_01_sfnt_off00007644.bin
4556323cee00302ac7b2e944dc72f8d1888dfec939bb1c5b17885bdbe4191532		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7644 10344 bytes
font_02_sfnt_off000099a7.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99A7 4324 bytes

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