Malicious PDF — malware analysis report

Static analysis result for SHA-256 39c9222027e9ef36…

MALICIOUS

PDF

41.4 KB Created: 2020-08-20 20:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79c1d969237d4a8afad5daf3f703f3bf SHA-1: a06f901a7bcff0d102a78c1dd523a96511ca5b6f SHA-256: 39c9222027e9ef36ac9b00420674748baad61536187eab93da39f9d2fc776b35
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=columbus+dispatch+sports+reporters'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links. The primary attack vector appears to be social engineering via a deceptive link within the document.

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=columbus+dispatch+sports+reporters
    • http://marovul.marvenemewing.com/uploads/1/3/1/3/131378776/1028901.pdf
    • http://files.nicoleedwardsauthor.com/uploads/1/3/1/3/131379923/92f89.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/tukilutirosarinikuluziwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/96640375317.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/korojomadijelalidig.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4434/files/tuberculosis_treatment_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0440/1908/9566/files/addicted_2017_movie.pdf
    • https://cdn.shopify.com/s/files/1/0437/7663/9134/files/54737056655.pdf
    • https://cdn.shopify.com/s/files/1/0463/5371/1266/files/call_of_duty_mobile_mod_apk_android.pdf
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/xojuwowobegakemozujup.pdf
    • https://cdn.shopify.com/s/files/1/0430/7314/2933/files/70051162008.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/zigir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mozinetesabelenigifil.pdf
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/47141045942.pdf
    • https://cdn.shopify.com/s/files/1/0439/2134/2619/files/free_ielts_reading_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/blackberry_ringtones_free.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_off00006227.bin
e986f572fa048a14d60cc754928a0a302ed86d6f6875c368aa7d59a1140407ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6227 5356 bytes
font_01_sfnt_off00007427.bin
c1c044c6f0a8a3ccb86864861b34b9cd20e4ed527dc923e182c8e334f4c810bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7427 10684 bytes

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