Malicious PDF — malware analysis report

Static analysis result for SHA-256 5612eb4ff041e18e…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 16:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95919cdcf43c84b9698b33dac7fbd408 SHA-1: 4e1e4890838a724263e473a4a29d86afeb7b09aa SHA-256: 5612eb4ff041e18eef2aa3a8f7db9a53e570ba2d0a7521dfd95b497b2b14eca8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to an 'autobiographical novel pdf' and includes the primary malicious URL. This indicates a phishing attempt designed to redirect users to malicious infrastructure.

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=autobiographical+novel+pdf
    • http://files.createdigitalpublishing.com/uploads/1/3/1/0/131070331/wewulatofibubov.pdf
    • http://files.massage-solace.com/uploads/1/3/1/6/131606984/b73f1.pdf
    • http://files.wte.co.nz/uploads/1/3/2/3/132303082/6b2275a6ed4261.pdf
    • http://files.tnpcdc.org/uploads/1/3/0/7/130739727/duxug_gisawewijuromu.pdf
    • http://files.lawofficesofmarkjcarrollpllc.com/uploads/1/3/2/6/132682048/5c87ebfd2d932.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/lugusit.pdf
    • https://cdn.shopify.com/s/files/1/0432/0880/2468/files/xapipugijip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9274/files/56186303293.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/seguwuvadiwozarof.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/52609289692.pdf
    • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/47984108213.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/30575224377.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/37312001543.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/fabimojekake.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/sofujirub.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/26782780868.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jexisobipa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3839/8869/files/convert_to_infopath.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_off0000748f.bin
33ab4ad5f6c404f50d3520632f3255076c76873546d392e857dafcc3674ea87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748F 5428 bytes
font_01_sfnt_off00008708.bin
fd2f7bbad519017eb4eb58272d315b976fcdd80e2148a2c500519c80f0cc758f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8708 9884 bytes

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