Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb6290875f717dc…

MALICIOUS

PDF

76.0 KB Created: 2020-08-08 00:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 444fd99fc702faa74f1a06b3359a8a62 SHA-1: 5a261f011aa43bceb345085fc5d4e8e75520409c SHA-256: aeb6290875f717dc03af86741266e748f2fa7e8ce936e022723d624294294718
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.com/pify?keyword=insurgency+definition+pdf', indicating a phishing or malware distribution attempt. The presence of a link farm suggests an effort to obscure the true malicious destination or to leverage SEO techniques for distribution. No scripts were extracted from this sample.

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=insurgency+definition+pdf
    • http://files.thepurplespoonbakery.com/uploads/1/3/1/4/131483266/wisodopexita.pdf
    • http://files.canineharmony.ca/uploads/1/3/2/8/132814826/fesibuwex.pdf
    • http://files.willconnect.net/uploads/1/3/0/9/130970005/53bd16de.pdf
    • http://files.eventsbykelli.com/uploads/1/3/1/3/131398385/9034557.pdf
    • https://cdn.shopify.com/s/files/1/0434/6327/8758/files/arithmetic_reasoning_and_analytical_thinking_questions_and_answers_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/5050/6142/files/riranopazajejud.pdf
    • https://cdn.shopify.com/s/files/1/0432/8269/4312/files/pugagatisat.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/gexomenipi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/periodic_table_hd_image_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/multinomial_logistic_regression.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mipubafuminidumef.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/ramas_terminales_del_nervio_facial.pdf
    • https://cdn.shopify.com/s/files/1/0437/9515/3058/files/1237106550.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_off0000e9c4.bin
d76404390524dff9ab5d94e7af3202a961f9a712bb558280d6ebe343ada96f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C4 5120 bytes
font_01_sfnt_off0000fb52.bin
1ac83c426ec71cc652ad84c18d9485e49f11860a828abd3332543ee9b406e8af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB52 11964 bytes

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