Malicious PDF — malware analysis report

Static analysis result for SHA-256 4faad0c22359ba74…

MALICIOUS

PDF

61.7 KB Created: 2020-08-27 19:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4719fe5fec21ca3982e8eb5c7a502714 SHA-1: b26204a1299a3e199770c4f38721f674959d3589 SHA-256: 4faad0c22359ba74f95ca34d54c6961e6d5ef22ac3cf8577edf28c3096669883
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is the primary attack vector. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility and lure victims. The primary malicious URL is ttraff.cc, which redirects to a secondary PDF.

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=israel+kamakawiwo%2527ole+somewhere+over+the+rainbow+what+a+wonderful+world+mp3
    • http://files.sharedliving.org/uploads/1/3/1/4/131409274/8a3dc8d0.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/suwaril.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/wejopu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5841/2185/files/chevy_tracker_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/85231108570.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/blessed_be_your_name_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/79369767397.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5819/files/90245771392.pdf
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/coretemp_plugin_rainmeter.pdf
    • https://cdn.shopify.com/s/files/1/0435/1826/3448/files/unit_introduction_metric_conversion_worksheet_answer_key.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005700.bin
acedc839b4d9e0716bdd525cb02e6b9c5dd6d9e8c8e580849d6460eb072ede0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5700 6384 bytes
font_01_sfnt_off000066b6.bin
6c32bcb9a4bff02a683d50df38692adc21fcf4d4275d8a75aec2d0200dbafb0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B6 5772 bytes
font_02_sfnt_off00007a48.bin
4fdbe022b111ee898fe27fd94167615cf41b34200ed6b9ab62f25051806b7a32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A48 1928 bytes
font_03_sfnt_off0000837c.bin
e0b89096584347e52b57f83853f0b6b1c36f7730ae55666c4072943a54e9798a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x837C 7412 bytes
font_04_sfnt_off000097f8.bin
dd9039ca48287fa542cbce0b0e8c9c201c7c4ab95102c3bfa463cc17dcd89509		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97F8 15456 bytes
font_05_sfnt_off0000c819.bin
9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC819 18776 bytes

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