Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0fd04ec5dbacd1…

MALICIOUS

PDF

46.9 KB Created: 2020-08-10 11:51:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a1943e6d417b13707dde65048c12b59 SHA-1: 64ea717f519b5895825dba7bc87ede557ddc3aa7 SHA-256: fb0fd04ec5dbacd1df5d710a316fa94f7eeb255842b7343eb05b172d55f4974b
140 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior by including numerous external links. The document body and heuristics suggest a lure impersonating a cloud document service like SharePoint to trick users into clicking the malicious link. The primary malicious IOC is the redirector URL.

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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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=edit+pdf+files+in+sharepoint+online
    • http://files.copelincontract.com/uploads/1/3/1/8/131857193/6879c55ac.pdf
    • http://files.eagleglobal.org/uploads/1/3/1/4/131483955/difop-gokaxekogiraso-panepopasaw.pdf
    • http://files.tactileearth.com/uploads/1/3/0/7/130775432/wemizodewe.pdf
    • http://basuzogi.backwind.ca/uploads/1/3/1/0/131069839/pumak-koratawis-tilapukifufeku.pdf
    • http://files.visittbo.com/uploads/1/3/1/4/131453984/3289803.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/3ds_cia_games.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/xirunomapifovofin.pdf
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/67642132023.pdf
    • https://cdn.shopify.com/s/files/1/0439/8078/3774/files/msi_970_gaming_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/29098664148.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/bupid.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/sekijelabomuvedipinuzoron.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/xapewedomotexison.pdf
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/accounting_theory_journal.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/24849898561.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/16140013912.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_off0000694d.bin
fcdc62b28c0a715024499937277a4a504394afd618244baae6a7e4db7fb74443
pdf-font-stream PDF embedded font (sfnt) at offset 0x694D 4876 bytes
font_01_sfnt_off000079c8.bin
e685572568fedfff3a741a314fb41e5b2542f998a4472063183eeef7faccee71
pdf-font-stream PDF embedded font (sfnt) at offset 0x79C8 11372 bytes
font_02_sfnt_off0000a009.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA009 4324 bytes