Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffaaab1513bfda05…

MALICIOUS

PDF

50.5 KB Created: 2020-08-18 18:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f936851a1e3ddefcecb52218f7f70ebc SHA-1: 149c59b0118a9435eeb29296d31c05399bfa5b06 SHA-256: ffaaab1513bfda05bd627f03b4ea19a10c03345576c4950fd55fc21de6bf0580
152 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a 'joint venture agreement philippines template'. This link redirects to a malicious URL, indicating a phishing or social engineering attack. The PDF also hosts a large number of other links, many pointing to Shopify, which is characteristic of SEO spam or link farm techniques used to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=joint+venture+agreement+philippines+template
    • http://files.tmis.us/uploads/1/3/1/3/131398360/4593405.pdf
    • http://fefodinof.msimarinesolutions.com/uploads/1/3/0/8/130813528/wibizakoxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8205/4813/files/32108627037.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/intermediate_algebra_11th_edition_lial.pdf
    • https://cdn.shopify.com/s/files/1/0447/8812/1760/files/soxigomujeborozufurulu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/kowagemu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/wewepav.pdf
    • https://cdn.shopify.com/s/files/1/0434/2385/8850/files/nagujakixilimub.pdf
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/ganolimituperiwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/computer_vision_in_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/53510222786.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/lurilajusofam.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_off0000806d.bin
4a04870744e4d4e0b2313e28a3e38ff925435dcf178ab2a93cbb9a54620a3a7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x806D 5280 bytes
font_01_sfnt_off00009243.bin
70a8d0a09b3ef48d2481ac575e99bce31e65f1248f74b0af06620449084b27bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9243 13540 bytes

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