Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acfdb5e9fd1a6f7…

MALICIOUS

PDF

45.9 KB Created: 2020-08-17 11:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5da7b516af7ca2aafbc82dc808803207 SHA-1: 79c4515c4c0d2c7a79098bc3ef02a59907154cf8 SHA-256: 9acfdb5e9fd1a6f7c1525803890f33e8e696be45136a2fee23b40595719affc8
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=edward+said+out+of+place+pdf'. Another heuristic indicates a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute content. The document body, though heavily obfuscated, contains the malicious redirector URL, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

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=edward+said+out+of+place+pdf
    • http://files.rearfacingtoddlers.com/uploads/1/3/1/6/131637814/4336359.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/lytic_and_lysogenic_cycle_of_lambda_phage.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/kilisusom.pdf
    • https://cdn.shopify.com/s/files/1/0440/3088/6053/files/duval_county_school_calendar_report_cards.pdf
    • https://cdn.shopify.com/s/files/1/0435/3520/4511/files/a5_booklet_template_word_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/66945595606.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/27743199288.pdf
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/vupili.pdf
    • https://cdn.shopify.com/s/files/1/0438/2015/5042/files/ppt_to_word_converter_small.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/87727425682.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/l_apiculture_pour_tous.pdf
    • https://cdn.shopify.com/s/files/1/0435/5391/5043/files/bolt_nut_spanner_size_table.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_off0000770e.bin
57bfa52a0f35de4688ef505e80c611a43eceb68d3a3228c7a0990b1e646e16fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770E 5196 bytes
font_01_sfnt_off000088e3.bin
b9d320ae4f849690718feb93eb88850af836f17a634476e38e59652253777f6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E3 10016 bytes

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