Malicious PDF — malware analysis report

Static analysis result for SHA-256 e877e6d891362170…

MALICIOUS

PDF

41.6 KB Created: 2020-08-20 10:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89c79ad393968061132eb9f8a32f861e SHA-1: 13a99139d541e5d66741ff20b92d8e1c83122a31 SHA-256: e877e6d891362170ef4115cbb0d4a0a8e5efa3ade306fd4d1e120588c554337a
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with a high number of links pointing to Shopify domains, one of which is 'cdn.shopify.com/s/files/1/0431/7259/3825/files/xebupo.pdf'. The document body, though heavily obfuscated, contains the same malicious redirector URL. This suggests the document's primary purpose is to redirect users to malicious infrastructure.

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.com/pify?keyword=casey+kasem+leaves+transformers
    • http://files.iranziclinic.org/uploads/1/3/1/4/131408415/9b59c95.pdf
    • http://files.ashleycarruthers.com/uploads/1/3/1/4/131453610/4cf5eeca7f.pdf
    • http://files.mybotoxboutique.com/uploads/1/3/0/7/130739379/mavezaladex.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/xebupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/68168142699.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/coloured_acrylic_sheets_bunnings.pdf
    • https://cdn.shopify.com/s/files/1/0430/9234/4993/files/amphiboly_fallacy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/attestation_sur_honneur.pdf
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/rumixejalu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/98542248129.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/97742555216.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/arabian_stories.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/52444966085.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_off00005d6d.bin
fdc9decb68eb55ec91a19552d24e0f71a988a550a82130059d4a1e59b9c24341
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6D 5044 bytes
font_01_sfnt_off00006e8b.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8B 1800 bytes
font_02_sfnt_off00007718.bin
65f57a1ca360f45c9d434744299281382842c53cb9da52fb9eeed6c676feac3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7718 10060 bytes