Malicious PDF — malware analysis report

Static analysis result for SHA-256 d336e4785a39a610…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 10:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b979932518ea96e0e0a089bbd591790 SHA-1: 32ef35b57e0e0ca72a5c74c4a52888b14ddec5eb SHA-256: d336e4785a39a6106867f77a65bb621c41eea6d1d1484b6db6a5a4964b4678e7
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=membrane+solutions+pdf', points to known malicious redirector infrastructure. The presence of numerous links, many hosted on seemingly benign platforms like Shopify, suggests a tactic to obscure the malicious destination and potentially engage in SEO poisoning or phishing campaigns. 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/pify?keyword=membrane+solutions+pdf
    • http://files.foundationschristianschool.com/uploads/1/3/1/0/131070481/bofipusutevademosex.pdf
    • http://files.cockerspanielclubofga.net/uploads/1/3/1/6/131607467/8224603.pdf
    • http://files.southeyeclinic.co.uk/uploads/1/3/0/8/130814531/8750812.pdf
    • http://files.neonatalresearch.net/uploads/1/3/0/7/130776601/2b14faf30.pdf
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/mefefebutudarofefusobos.pdf
    • https://cdn.shopify.com/s/files/1/0436/2679/1075/files/povuxiwinurajumavotagote.pdf
    • https://cdn.shopify.com/s/files/1/0429/2375/3635/files/11227079961.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/72863094213.pdf
    • https://cdn.shopify.com/s/files/1/0431/8219/4847/files/agenda_2020_naciones_unidas.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/46469798958.pdf
    • https://cdn.shopify.com/s/files/1/0433/0124/0992/files/49460498960.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/kojevoxutaravuxizevesobo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/estrous_cycle_in_rats.pdf
    • https://cdn.shopify.com/s/files/1/0435/4349/4807/files/julie_garwood.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1314/files/61005779899.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/fafopetifujibelavapizuja.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ebd.bin
6a350a7a528ea87d992fcabdd0d0b9e48002980c53116966103de772472681a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBD 5216 bytes
font_01_sfnt_off00006054.bin
5e60344e2e856c57261440cd720db8bfb9a42c2b33065fc4dfd0f14564143be2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6054 18012 bytes
font_02_sfnt_off000093bc.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x93BC 4324 bytes