Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d701674ae0a71b…

MALICIOUS

PDF

44.5 KB Created: 2020-08-31 05:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2ba00c1aa93217a9f84e67d1f476a1e SHA-1: 58219337240bba53cc4eae319e99623827871d86 SHA-256: e5d701674ae0a71b751d3b5bfb50538c6d1f4ec4d30f03586f9a1f0b6c77bb38
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. One of these links, however, directs to a known malicious redirector at 'ttraff.ru'. This suggests a phishing or malicious redirection attempt, likely to distribute further malware or lead users to a compromised site.

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.ru/wix?keyword=adecco+malaysia+salary+guide+2019
    • https://cdn.shopify.com/s/files/1/0439/6492/4062/files/ditoxoviwurofaxixagizimik.pdf
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/gubolavogupetumefud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/anakin_midichlorian_count.pdf
    • https://cdn.shopify.com/s/files/1/0434/7320/7446/files/matrix_inverse_2x2.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/xolepuduga.pdf
    • https://cdn.shopify.com/s/files/1/0468/8927/1453/files/eagles_peak_rs07.pdf
    • https://cdn.shopify.com/s/files/1/0462/1556/1370/files/wotagurerer.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/zimiwedabo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/sql_tutorial_for_beginners_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/driver_placard_their_vehicle_to.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/sleep_apnea_questionnaire_epworth.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/mathematical_modelling_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/5333/5207/files/83955426583.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/practical_machine_learning_anomaly_detection.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_off00006dd1.bin
3845b44ba09fdcf8bc835ef6ce1a2c73c2412d02575f6b5a7c1d89d2aec46092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD1 5832 bytes
font_01_sfnt_off00008192.bin
3ab6d42220529220ad08cb0684eee2e643b9ec3aef98eb785c573dc990281c3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8192 10288 bytes

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