Malicious PDF — malware analysis report

Static analysis result for SHA-256 c370715dbd38a29b…

MALICIOUS

PDF

35.0 KB Created: 2020-09-17 02:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58cb578e094dc71291c553b11939d13e SHA-1: 7857b514d804771ff2ea3796c9e533779db6657d SHA-256: c370715dbd38a29b3b70f9a59de994bd3299470399c4267096181f3b107a712a
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, disguised as an answer key for a graphic organizer. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the embedded URL points to a suspicious domain. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content broadly. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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.club/wix?keyword=explosion+of+the+maine+graphic+organizer+answers
    • https://cdn.shopify.com/s/files/1/0463/1022/8133/files/85329273951.pdf
    • https://cdn.shopify.com/s/files/1/0434/2589/0469/files/labanemogon.pdf
    • https://cdn.shopify.com/s/files/1/0435/6574/4287/files/benzodiazepinas_en_el_anciano.pdf
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/13243429242.pdf
    • https://c2c6bf64-760f-41ce-9799-49972823f2af.filesusr.com/ugd/8ade13_59041f164d314407b95ffbc8a4aa5979.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/9607/1589/files/factoring_algebraic_expressions_worksheets_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0440/2734/7109/files/colon_cancer_screening_guidelines_acg.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/karaoke_party_invitation_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/rogufegeforula.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/multivariable_calculus_stewart.pdf
    • https://cdn.shopify.com/s/files/1/0437/7450/9213/files/kevir.pdf
    • https://cdn.shopify.com/s/files/1/0429/8961/7311/files/asche_abar_shabor_full_movie_mkv.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/rizemuzalajixosojinupobo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/josixoparusekaketo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/antivirus_para_android_el_mejor_2018.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_off00004996.bin
6bdac9211afaafb22df944a0b211ab8767f64a0d2e45b60a2ad98c98d8e8fd78
pdf-font-stream PDF embedded font (sfnt) at offset 0x4996 5596 bytes
font_01_sfnt_off00005c97.bin
3b3c248a8a0fa528e2b44ca4d22a6598f1cb2d8add6e19534e7677664f1e5a1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C97 10092 bytes