Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7600c3b011a26d9…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 11:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e62ffafab46ef96b647f178ae9b9011a SHA-1: c09e4f3156e1d21723b84044130e4dbb12125e1b SHA-256: c7600c3b011a26d9f6b5fea68319f472259d26b7a46d14e997acf126edd45dfa
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that points to a redirector. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm used for SEO poisoning or to obscure the final malicious destination. The SE_CALLBACK_LURE heuristic further suggests a social engineering pretext, likely to trick users into clicking the malicious links.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=husqvarna+51+chainsaw
    • http://files.saranicole2612.com/uploads/1/3/1/8/131856907/4460cec58.pdf
    • http://mupejon.firebirdnewzeal.org/uploads/1/3/1/4/131438641/710242f7ecb.pdf
    • http://files.dammaimorganllc.com/uploads/1/3/1/3/131378953/lerikexizabu.pdf
    • http://files.monocacycreekhouseconcerts.com/uploads/1/3/2/6/132695491/galiwip_pamopidunisox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/74067972569.pdf
    • https://cdn.shopify.com/s/files/1/0431/8334/1728/files/66118920112.pdf
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/67652442748.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/wisitepezeredakoru.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/mewejiverivezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/kaseletanog.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/47216812856.pdf
    • https://cdn.shopify.com/s/files/1/0430/0672/2211/files/xanikexilenofigugevato.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/kibesulofejotuvavewuwiso.pdf
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/79680141473.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/selugomutifovof.pdf
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/kuzigoperazojefapuri.pdf
    • https://cdn.shopify.com/s/files/1/0429/0743/5167/files/jafokam.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_off0000664f.bin
e4532b08c482c30d6e48b48a3b797989dfb4741019a2ec11d519ae03550c473c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664F 4844 bytes
font_01_sfnt_off000076c8.bin
faf82e21cefecfc23cd7fa2daf0dd571c191a7a03976840258ad77b93277e598		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 10668 bytes
font_02_sfnt_off00009b2f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2F 4324 bytes

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