Malicious PDF — malware analysis report

Static analysis result for SHA-256 259996cc5dffea5d…

MALICIOUS

PDF

49.2 KB Created: 2020-08-04 20:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f0f4e997d7fd30154f111ea3d644c4 SHA-1: 912ee1a9ae5a54fa63fe0b16365a8f470207e47d SHA-256: 259996cc5dffea5d952e44637d436c3501692c018f90098e8887f072b8e9d6be
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=introduction+to+mechanics+of+composite+materials+pdf'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting a broader campaign to generate traffic. No scripts were extracted from this sample.

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=introduction+to+mechanics+of+composite+materials+pdf
    • http://files.opticalonlinestore.com/uploads/1/3/0/7/130738870/7ef4081.pdf
    • http://files.justiceforallcanada.org/uploads/1/3/2/8/132816041/6665718.pdf
    • http://files.vcgallery.org/uploads/1/3/1/8/131856381/rokererukirejakifu.pdf
    • http://files.sgtnatefitness.com/uploads/1/3/0/7/130775970/4557115.pdf
    • http://files.elisabethlagrone.com/uploads/1/3/2/3/132303270/tusexop.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/perudidilim.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/nepali_full_movies_kohinoor.pdf
    • https://cdn.shopify.com/s/files/1/0434/0639/3496/files/boviribezebeposororu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bewasovenajuwawofitef.pdf
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/saziburikol.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/23233471045.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/13567968007.pdf
    • https://cdn.shopify.com/s/files/1/0435/1416/7450/files/gepavire.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6186/files/11777121257.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/4009418750.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/doheny_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/85967738361.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/troy_bilt_pressure_washer_3000_psi_manual.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_off000082d7.bin
aa106110b9e8ceda44ab8fe74a795512e96b703a936b8e0f290edd5ef6ae2638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D7 5332 bytes
font_01_sfnt_off000094c8.bin
cadd329a55abac80850977b25021e8c6f320717eaf4485c0dff276147bd7601d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94C8 9972 bytes

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