Malicious PDF — malware analysis report

Static analysis result for SHA-256 35400bb3d5ebb012…

MALICIOUS

PDF

52.6 KB Created: 2020-08-20 02:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a802f9551d2941ab1e29fd751f521d03 SHA-1: c7f7c3b01c3db82e796bf8ef27ecd932a59120e7 SHA-256: 35400bb3d5ebb0125b0f5eecc1b737783eca5e841c33686cc57d84ed84f201e0
150 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 'ttraff.com'. Additionally, it exhibits a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the malicious destination. The document body, though heavily obfuscated, contains the malicious URL and a benign-looking title, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=arc+length+area+of+sector+worksheet
    • http://dijome.magnuskravik.com/uploads/1/3/2/8/132816066/4471319.pdf
    • http://files.hilltopangusfarm.com/uploads/1/3/1/3/131382078/7985637.pdf
    • http://files.natangweruben.com/uploads/1/3/1/4/131454986/sakuxumuk_janido_woneturaradu_titoxe.pdf
    • http://porusixu.whyhellogreetingcards.com/uploads/1/3/0/8/130874540/01e8ed093721246.pdf
    • http://fogaw.cool2bnerdy.com/uploads/1/3/1/3/131397989/bapolirabizupavubi.pdf
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/final_fantasy_vii_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/xuvizabizuveloda.pdf
    • https://cdn.shopify.com/s/files/1/0431/7062/7735/files/38650348651.pdf
    • https://cdn.shopify.com/s/files/1/0430/2431/8618/files/57411373833.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8239/files/subebabotakim.pdf
    • https://cdn.shopify.com/s/files/1/0433/7254/4150/files/product_assortment_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1771/5361/files/pikaxodoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/4705/9607/files/88067651870.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/mazofezixabojukumavowatij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/gudetomotodefim.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1560/files/beautiful_quotes_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/jezegirab.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_off0000843c.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x843C 2828 bytes
font_01_sfnt_off00008e36.bin
08fcef00eee65e7150868e4b7daa9cfec9ea7d4d2a32fe54cb874612d7ef1520
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E36 5288 bytes
font_02_sfnt_off0000a03e.bin
4d2efe5f54911519b99e81a38afd2208bd255cd7fb7109f7510db5445432d5fc
pdf-font-stream PDF embedded font (sfnt) at offset 0xA03E 10096 bytes