Malicious PDF — malware analysis report

Static analysis result for SHA-256 e136f848bc856eb9…

MALICIOUS

PDF

35.3 KB Created: 2020-08-27 13:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7675c24b3c7560cfb48b022c43a58009 SHA-1: cbbb9fbb86d25c58c547b29cbb26728f26ce95fa SHA-256: e136f848bc856eb98b26ca83c67a13f7780481367a093c96f78b48ed6c2f6755
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=do+you+believe+in+magic+mp3'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external PDF links, with the dominant host being cdn.shopify.com. The document body also contains the same redirector URL and a list of Shopify-hosted PDF links, reinforcing the lure mechanism. No scripts were extracted, and the primary malicious activity observed is the redirection to a potentially harmful URL.

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.ru/pify?keyword=do+you+believe+in+magic+mp3
    • http://fijib.nmas.org/uploads/1/3/0/7/130775734/97eae8b.pdf
    • http://files.happyhorsefarm.net/uploads/1/3/0/7/130775201/41daa.pdf
    • http://files.playfulartstudio.com/uploads/1/3/2/7/132740925/b0af411.pdf
    • http://guneloget.abbasgrotto.com/uploads/1/3/0/7/130775350/telajisu-jazodoza-fujejene-bumoto.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0326/files/48245899702.pdf
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/attracting_wealth.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/mawarilevoxefijaze.pdf
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/chronic_heart_failure.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/suwulipijon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/59460495204.pdf
    • https://cdn.shopify.com/s/files/1/0437/0733/4810/files/decking_screw_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/operational_amplifiers_and_linear_integrated_circuits_6th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/milelosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9957/files/tremulus_rpg.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/fizebofixozamek.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/entrepreneurship_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/fashion_report_ffxiv_week_73.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_off00004a95.bin
728072a7fe2fcf0e09c40b56271b3af9ad096137ba069f1d6573756113335df3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A95 5444 bytes
font_01_sfnt_off00005d19.bin
8895cb91978c4e9ce3ecfe634fbf841d649f53d8625d09c2bff4271ef6a7b206
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D19 10428 bytes