Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e512ceef9b9b05a…

MALICIOUS

PDF

43.0 KB Created: 2020-08-14 20:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 871aebc464205e296f8290ab4fec15d6 SHA-1: e13d353c05c308be506b07546a3f124eb89f7119 SHA-256: 3e512ceef9b9b05a4044624feb88c5c78ed265b82ce3b2cf26cb9401d81f5c7d
120 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 Shopify domains, likely as part of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious content. The document body contains obfuscated strings and references to the redirector URL, indicating an attempt to lure users to a harmful destination.

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=string.+format+integer+c%2523
    • http://files.leadersoflanier.com/uploads/1/3/0/7/130739375/3705428.pdf
    • http://files.carlislekidshouse.org/uploads/1/3/0/7/130740517/de4edda.pdf
    • https://cdn.shopify.com/s/files/1/0434/0216/6428/files/traduction_du_roman_la_boite_a_merveille_en_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/bejifawabipesagogikakizus.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/53560600128.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/37288364524.pdf
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/excel_cdf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/catlogo_mary_kay_septiembre_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/ferasesikixigupufosogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/ufc_221_live_stream_free.pdf
    • https://cdn.shopify.com/s/files/1/0446/6117/8521/files/can_you_speed_up_edgenuity_videos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/international_accounting_standard_18.pdf
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/10208323037.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_off000062c4.bin
1f0ac0f76c08eca45d4e38e2b6520dfd14c4ab51fb7f5febdfc7598136f1f6e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C4 5124 bytes
font_01_sfnt_off0000741e.bin
5a65977715e4e931b6dabd767d2ffaa3d16f6a77dce6103a93aae4ba5aa441bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741E 13888 bytes

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