Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad07165882556676…

MALICIOUS

PDF

42.3 KB Created: 2020-08-30 07:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aae5873532e3319cf30cd7786a603bb7 SHA-1: 798477338117299da4ac8e97ef7b493c50625c52 SHA-256: ad07165882556676e4d3a21756c14b08553a44165588daf4139545a9f33fd7bd
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a guide download. This link, 'https://ttraff.me/wix?keyword=super+metroid+randomizer+guide', leads to known malicious infrastructure. The document also functions as a link farm, containing numerous external PDF links, many hosted on 'static.usrfiles.com', which is likely part of a SEO poisoning or link farm strategy to obscure the malicious redirector.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=super+metroid+randomizer+guide
    • https://static.usrfiles.com/ugd/12f4eb_23e85f6b48804d4687e1a876015cf0b5.pdf
    • https://static.usrfiles.com/ugd/5ecadc_0d444f98b1a64654ad917709069b896a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a74bf3a1a1e74299949488577e8a7950.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a080ea90e7643849987ba25e7c634b6.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/wezikijinajuzepar.pdf
    • https://cdn.shopify.com/s/files/1/0435/0345/2326/files/le_nouveau_taxi_1_cahier_d_exercices_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4152/files/documentario_gravidez_na_adolescencia_profisso_reporter.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/setusup.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0053/files/cellular_organization_worksheet.pdf
    • https://static.usrfiles.com/ugd/1cfe37_211c2bf91f2a49cba35b4126d8ffbe32.pdf
    • https://static.usrfiles.com/ugd/ac72e0_fa68e1342e2f4f88b3803b1c0506f500.pdf
    • https://static.usrfiles.com/ugd/b8c837_11c40feae2794d0dac1f2d1dfb00b9a6.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd612951ca1747b4a411d83b7988187c.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_off0000680a.bin
3a86fe4e8621ef2904385c916e5d758eeb253889d3d5c692fd0ee72bab73b49b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680A 5220 bytes
font_01_sfnt_off000079bf.bin
bd3ecd51e07a394c38ce5debd0348e0737884ba55a7484a36c80fec78d94dd7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79BF 10364 bytes

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