Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ad9a856fa0e3dc…

MALICIOUS

PDF

40.1 KB Created: 2020-08-21 01:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff32a4ae5f3a7086dbbee063b1f9f724 SHA-1: e730436617803e01594e02ad1767fba741666df1 SHA-256: 89ad9a856fa0e3dc3a9677c4007d9696245b7efdc2bb07f5747e54bb0ad970c0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF documents, a technique often used to inflate search engine rankings or distribute malicious content. One of these links, 'https://ttraff.cc/pify?keyword=desert+rose+english+song', is identified as a known malicious redirector. The document body is heavily obfuscated and contains remnants of this URL, suggesting it is the primary lure. No scripts were extracted, and the PDF structure itself does not indicate further exploitation beyond the redirection.

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.cc/pify?keyword=desert+rose+english+song
    • http://nakavo.vallenduuk.pl/uploads/1/3/1/0/131070382/labolilasuk.pdf
    • http://files.mikewilliamslivemusic.com/uploads/1/3/0/7/130740524/58c5c09c.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/72262458007.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/e_banking_products_and_services.pdf
    • https://cdn.shopify.com/s/files/1/0454/6487/9256/files/48385130749.pdf
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/73448650256.pdf
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/lusupixomenunemi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/metra_bnsf_schedule_change.pdf
    • https://cdn.shopify.com/s/files/1/0443/0174/6332/files/wasalokuretusidomi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/vunuvitotovuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/15286321418.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/vilotizibuwi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0794/0520/files/78621051844.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_off00006194.bin
217826c4291e031a00b01a826604dcf25c0ec59f2d6b43a3ac8cadfd40b97345		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6194 4736 bytes
font_01_sfnt_off000071ac.bin
eab6e727f4fbcd7fdc9f516e2aa77e3ccec56e7d1bb139d81d82a505525c5ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AC 10064 bytes

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