Malicious PDF — malware analysis report

Static analysis result for SHA-256 93985afdc717645d…

MALICIOUS

PDF

68.5 KB Created: 2020-08-22 00:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be21f27699ef598b886048cd10552971 SHA-1: f45bec6389147aeea84df16c3f1034b49ba70edf SHA-256: 93985afdc717645d67da436d72070a93cca45950a2577e25acd07cc14f135791
128 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a free textbook download. This link, 'https://ttraff.cc/pify?keyword=biological+science+textbook+free', redirects to malicious infrastructure, indicating a phishing or malware distribution attempt. The PDF also contains a large number of external links, many hosted on shopify.com, likely part of an SEO link farm to improve search engine ranking for malicious content.

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.cc/pify?keyword=biological+science+textbook+free
    • http://files.christianenoelting.com/uploads/1/3/0/9/130969873/44207.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/osrs_dagannoth_cannon_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/4619/7653/files/zedakadebofenoperapiso.pdf
    • https://cdn.shopify.com/s/files/1/0437/5311/1704/files/45904444272.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/vugopudazababukitan.pdf
    • https://cdn.shopify.com/s/files/1/0432/1122/7300/files/jikobasilajoribi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5929/0022/files/ragiburifubimetujazaju.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/mekezetedevakoja.pdf
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/house_rental_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/35775495197.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6d0.bin
3cbf19a10da3154b5af376546c50a19fdb9c00406e9f9a7d9e97c3cf431a4d52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D0 5372 bytes
font_01_sfnt_off0000d929.bin
567d9b5f3af96617ca2c8c8075ded24f4597398c7051d2adf63fc768132cd9b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD929 13576 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.