Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b9d212b9093d05…

MALICIOUS

PDF

52.8 KB Created: 2020-08-21 12:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f44c6b74d3b5b79c65f147ab473b3b32 SHA-1: 48947f552c228b7dd49211184dc7caf510e3c1bc SHA-256: 24b9d212b9093d05c81fa514257b3b2e052689a4c86e15506101543d84cb98fc
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection attempt. The presence of a 'download button' lure and a 'payment redirection' lure indicates a social engineering attempt to trick the user into clicking the malicious link. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. The document body contains obfuscated text and the target URL, further supporting the malicious intent.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.ru/pify?keyword=yowhatsapp+2018+new+version
    • http://files.peacenaperville.com/uploads/1/3/1/0/131070459/fagizir_pinobato_tudap_bomesujifav.pdf
    • http://xanuja.scottyjracing.com/uploads/1/3/2/7/132710621/6ee44e3.pdf
    • http://files.safelysweettreats.com/uploads/1/3/1/0/131070356/fisikolaxo.pdf
    • http://daneno.calistosecretkennel.com/uploads/1/3/1/4/131405927/9d0463e1fe.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/14955731935.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/19656576434.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/preparative_chromatography_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/cell_culture_basics.pdf
    • https://cdn.shopify.com/s/files/1/0433/5573/4167/files/vitamin_a_deficiency_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0440/7748/2136/files/stratton_oakmont_sales_script_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/4758/2870/files/nubinibosawunafudavirin.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/boroxixemetagil.pdf
    • https://cdn.shopify.com/s/files/1/0428/4216/1319/files/kisaliteb.pdf
    • https://cdn.shopify.com/s/files/1/0440/7050/2550/files/gelepafepigijabowabevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/55761358569.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_off000081f6.bin
845944e7efcd55dead10d9670671ccb5cd18a7d6745d47ce1c2e48cff7b8d019		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F6 5296 bytes
font_01_sfnt_off00009401.bin
73b5ab0108270c83e2019a2bf3a4b09ffba941ca5d74f28f5d76ca4a776ad95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9401 11008 bytes
font_02_sfnt_off0000b898.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB898 4324 bytes

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