Malicious PDF — malware analysis report

Static analysis result for SHA-256 814c178c6e1c8006…

MALICIOUS

PDF

49.6 KB Created: 2020-08-04 16:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0de299d0be5322153a8cbbc18b7947b0 SHA-1: 3a36f931a33483018429a712c2d3b6f04e574176 SHA-256: 814c178c6e1c8006b2baaf65ca021891ff66a8e696a06fd6beea79e043457d9d
168 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body and heuristics indicate a social engineering lure, specifically a fake download button and a browser extension/update installation prompt. This suggests an attempt to trick the user into visiting malicious sites or installing unwanted software, likely leading to further compromise.

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.ru/pify?keyword=html+input+type+file+accept+only+pdf
    • http://files.ballymoneyu3a.com/uploads/1/3/0/7/130738859/mikawirodebimejiroxe.pdf
    • http://files.tangosverige.com/uploads/1/3/2/6/132696483/319739.pdf
    • http://files.wallaceclassroom.com/uploads/1/3/0/7/130775760/e814df96db85.pdf
    • http://files.caspirparanormal.org/uploads/1/3/0/7/130776888/pugovobeped_vekerapubim.pdf
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/wazopiwogafimiludukawezug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/sepavitofovitavusizifoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/80178889850.pdf
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/86443655803.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/58150215581.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/stardew_content_patcher.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/zoladofujexojak.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/vijava.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/96511717506.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/81818488896.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_off000077f7.bin
c39b122bddb70eb16d3d37e2da16ec16657a63e6a0480b1ff89100e024e9fdee
pdf-font-stream PDF embedded font (sfnt) at offset 0x77F7 4972 bytes
font_01_sfnt_off000088ca.bin
e61f1eb195ce8cd7c1882abe561bf0ef667e969e1d630861a664c0074a76db3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x88CA 10284 bytes
font_02_sfnt_off0000abb6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xABB6 4324 bytes