Malicious PDF — malware analysis report

Static analysis result for SHA-256 9521e322043db8dc…

MALICIOUS

PDF

51.5 KB Created: 2020-07-30 22:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8343308b953feb2b65201302a405b1fe SHA-1: fc1ec5af3e769d7995f3e8035bdebab87d04248e SHA-256: 9521e322043db8dcc44b4dfa2301635b5b8947974c154c7bcc40efa883fbb879
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM. The primary malicious URL identified is ttraff.ru, which is used as a redirector. The document body, though heavily obfuscated, appears to contain metadata related to PDF generation and mathematical formulas, likely serving as a lure to disguise the malicious links.

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=basic+formulas+of+mathematics+pdf
    • http://files.yewmountain.org/uploads/1/3/1/4/131453136/6337845.pdf
    • http://files.wvswma.org/uploads/1/3/0/7/130739288/vukogotutifived.pdf
    • http://files.2020glassplus.co.nz/uploads/1/3/2/6/132695832/duxofuzo.pdf
    • http://files.jocelynpearsoncoaching.com/uploads/1/3/0/7/130739401/fetijag_feboxe_fezufod.pdf
    • http://files.spiralingupsolutions.com/uploads/1/3/1/4/131406781/salape-nusidemak-nobegukasu-kokavo.pdf
    • http://files.spiralingupsolutions.com/uploads/1/3/1/4/131406781/s
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/fagejow.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/26941528698.pdf
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/dotinavunenakoregitusola.pdf
    • https://cdn.shopify.com/s/files/1/0431/0961/3725/files/nudoxepufubokunejafegoduj.pdf
    • https://cdn.shopify.com/s/files/1/0440/9635/6504/files/76773271591.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/96315352232.pdf
    • https://cdn.shopify.com/s/files/1/0433/8565/1358/files/vegevebilesotiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/5368277549.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/91047547505.pdf
    • https://cdn.shopify.com/s/files/1/0435/7590/2363/files/11967841039.pdf
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/kizaviruz.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_off000083a7.bin
889a093088b0cf720f9b6c015f49d655e40099657dcc9a9d7795b652a1fb312d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A7 5220 bytes
font_01_sfnt_off0000955a.bin
aafdc857ec0149d200d7f0188c7c9df6b3c4fd99ce4290400bde578fbdbe8b2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x955A 13972 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.