Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b2a28d860a23f25…

MALICIOUS

PDF

47.3 KB Created: 2020-08-07 00:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a13d7ecdc564062670b9d67a4c51de9 SHA-1: 1049d8019b139fce6048d902b7c3b19886a8b812 SHA-256: 7b2a28d860a23f252b2559fc25caacb2153804fe4cc2a28ee760d7e89fd3fb1b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary URL `https://ttraff.com/pify?keyword=black+brown+and+beige+score+pdf` identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to lure the user to malicious infrastructure. The presence of numerous benign-looking Shopify links likely serves to mask the malicious redirector within a larger link farm.

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.com/pify?keyword=black+brown+and+beige+score+pdf
    • http://files.gabrielagamez.com/uploads/1/3/1/3/131384432/8214899.pdf
    • http://files.boracay-property.com/uploads/1/3/0/7/130739595/7044816.pdf
    • http://files.sphsmusicboosters.com/uploads/1/3/1/4/131407424/4529643.pdf
    • http://lirubo.audreyartography.com/uploads/1/3/2/6/132681513/497c5dd7010d4.pdf
    • http://files.michelacarmazzi.com/uploads/1/3/0/8/130874160/6151309.pdf
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/zivizamowiroribitid.pdf
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/44617800261.pdf
    • https://cdn.shopify.com/s/files/1/0436/8121/8710/files/jofasegotowimuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/fusionner_des_en_un_seul_fichier.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sotuxinonuwirumedubisaz.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/16797609135.pdf
    • https://cdn.shopify.com/s/files/1/0433/9702/1854/files/jegaxejepewafitomutis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/11359519488.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kipisoluni.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/tiwazovenufabuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9447/files/munifo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6119/files/tcpdump_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xikosimuzewenox.pdf
    • https://cdn.shopify.com/s/files/1/0433/9132/0214/files/nicki_minaj_the_pink_print_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/losse_bestanden_samenvoegen_mac.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_off00007946.bin
8747e6ef4a01cf7d439ed5dec6b96b68ea8efa45c1b444c6a09290caf78e6e99
pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 5668 bytes
font_01_sfnt_off00008cac.bin
239fdcee423223c66f06327efe75ec93aac3550cacb748d9e5f4d4c5747aca0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAC 10240 bytes