Malicious PDF — malware analysis report

Static analysis result for SHA-256 9742aa9648d59774…

MALICIOUS

PDF

39.5 KB Created: 2020-07-10 16:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 666e4ce411337bb69bc9d73029f45296 SHA-1: ecf41e831cba1301ec0ed88045e26919a5a84b23 SHA-256: 9742aa9648d59774b11289631ae83fe4b9f04d60be0b800da4693ff35ec780a7
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to suspicious domains and are likely part of a link farm designed to manipulate search engine results. One prominent link redirects to 'https://ttraff.cc/', a known malicious redirector. The document body, though partially obfuscated, also contains this redirect URL, reinforcing the malicious intent. The file's purpose appears to be to drive traffic to malicious infrastructure through deceptive PDF content.

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/wb?keyword=differential%20equations%20with%20boundary%20value%20problems%202nd%20pdf
    • http://files.gbscambodia.org/uploads/1/3/0/9/130969887/8241721.pdf
    • http://files.totalbodybeautiful.us/uploads/1/3/2/7/132711983/nizodawelaw_pogaduz.pdf
    • http://files.sisterspiritwomensharingspirituality.org/uploads/1/3/2/8/132815154/58853863.pdf
    • http://files.finalfinishdetailing.com/uploads/1/3/2/7/132710655/levin_linebedanelu_vidaki_vukadidi.pdf
    • http://files.sharonmcgregor.com/uploads/1/3/1/8/131856308/5447877.pdf
    • http://files.shuryukankarate.com/uploads/1/3/1/1/131164375/8559775.pdf
    • http://files.jacksonvillefirstbaptist.org/uploads/1/3/0/7/130739313/midizutesomem.pdf
    • https://litowelixi.files.wordpress.com/2020/06/50803916866.pdf
    • https://ladareguk.files.wordpress.com/2020/06/36380820469.pdf
    • https://defotikev.files.wordpress.com/2020/07/marekafaduxozopixiz.pdf
    • https://najewexel127601612.files.wordpress.com/2020/06/nasivomogirefosif.pdf
    • https://waxopamu.files.wordpress.com/2020/07/75706274342.pdf
    • https://segemabo.files.wordpress.com/2020/06/3462555502.pdf
    • https://zabalojiji.files.wordpress.com/2020/06/62782568432.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.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_off00005ada.bin
b62731d6548a94cd48f97ebcb85ff90e5b75d96a42d620a283fcc58a7ac1c9cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADA 5816 bytes
font_01_sfnt_off00006e8e.bin
77dbc4099e671f3d4876e4a411dd8e1dcb5f6352df1c556bc3e7877bc6c5aedf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8E 10100 bytes

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