Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf44c2c48e27bc07…

MALICIOUS

PDF

41.2 KB Created: 2020-08-31 01:39:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f8ace16b5f8ec775618ca40f3ed39cd SHA-1: 267952e38961231463e25b7c7e867002da843ea1 SHA-256: cf44c2c48e27bc07fbe7db5f1fbc768a4b54f754ed23560c77eb0c063b1f8f94
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, many of which point to external PDF files hosted on Shopify. The primary malicious link, https://ttraff.ru/wix?keyword=manhattan+gmat+sentence+correction+6th+edition+pdf, is identified as a malicious redirector. This suggests the document is designed to trick users into clicking a link that appears to be a search result, leading them to malicious infrastructure. No scripts were extracted from this sample.

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/wix?keyword=manhattan+gmat+sentence+correction+6th+edition+pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3902/files/41995073349.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/jujuwewak.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0119/files/31745337610.pdf
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/dragon_ball_z_dokkan_battle_android_republic.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdf
    • https://static.usrfiles.com/ugd/d55797_249e2f5ff06f48fead76e8cab2f35bd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_efa9004ee60f4ed68613ac16bc5decb9.pdf
    • https://static.usrfiles.com/ugd/73f3b0_3342fc0312b34a9ca53f6fbe6c493018.pdf
    • https://static.usrfiles.com/ugd/b8c837_a77677dbcb4b448a8aa4d3c41675b922.pdf
    • https://static.usrfiles.com/ugd/b8c837_81e9a96334a448a7875120ca777d5510.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ec8654f047b474196717cf639bc79e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_39f0f66d1d6e4fa6876cafb002f957c2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/sumogorezovunobedadedi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/guitar_chords_filetype.pdf
    • https://cdn.shopify.com/s/files/1/0430/5479/2866/files/11752123032.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/catena_aurea.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_off0000588a.bin
35700054e97225f9a62960780a46a49163acb69f9340a530eba4c05f24dee9ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x588A 5696 bytes
font_01_sfnt_off00006bb8.bin
80a663a26938e2d1dcca24ad95e111dca03541718911782420e9d85511da7a23
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB8 13824 bytes