Malicious PDF — malware analysis report

Static analysis result for SHA-256 223339c549244f0e…

MALICIOUS

PDF

59.0 KB Created: 2020-08-08 15:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b18dd3c158b2aa197d4b7ebd5c69afd SHA-1: e807c6a436cea51f6c3c0d52c422e6b8f8c3d480 SHA-256: 223339c549244f0e27648e6ff1e492a98b2001129960f002b014fff0f20e9f1d
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs. One critical heuristic indicates a PDF malicious redirector link to 'ttraff.cc'. The document body contains the string 'Input file accept pdf' and a URL that appears to be part of the redirector chain. This suggests the document's primary purpose is to redirect users to malicious content, likely for phishing or malware delivery.

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=input+file+accept+pdf
    • http://nomido.julesinyoga.com/uploads/1/3/2/6/132682883/lotexugovaporo.pdf
    • http://files.cancerenergyhealing.com/uploads/1/3/0/8/130873961/xugoxed-luterapur-foxib.pdf
    • http://files.joshualinkmusic.com/uploads/1/3/0/7/130738714/pezeluregunubun.pdf
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/biochemical_test_principle.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/52491481419.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5456/files/58458191257.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/tirakuduwudani.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/cet_exam_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/suwuvosijetoxitudojegek.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/makalah_batuan_sedimen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92399027362.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0445/files/31355713020.pdf
    • https://cdn.shopify.com/s/files/1/0440/7905/5000/files/flower_names_and_pictures_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/nine_abdominopelvic_regions_and_organs.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/18096790337.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c4d.bin
b652096b20e77b2aa9a978bfb0b3c5ec172d4e907cb5a62232c3b291371b19ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 8476 bytes
font_01_sfnt_off000088ca.bin
3aafde2d56b6780422a9f60895e4b418638f32be010cdc854eec366eab05cb82
pdf-font-stream PDF embedded font (sfnt) at offset 0x88CA 4812 bytes
font_02_sfnt_off00009944.bin
461da4c5e88034411b7ab8342afa7d8cb1342bab5f33edb986d57b8b6b875e0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9944 14824 bytes
font_03_sfnt_off0000c83e.bin
354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb
pdf-font-stream PDF embedded font (sfnt) at offset 0xC83E 16036 bytes