Malicious PDF — malware analysis report

Static analysis result for SHA-256 e52220d4f3a98674…

MALICIOUS

PDF

44.9 KB Created: 2020-08-03 05:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 133019a22b664a6c90a05eef57556869 SHA-1: 088b40f406fb69ad1f764ea868fd9ff45a0d5a05 SHA-256: e52220d4f3a9867497ddee5fea46920be63262280a5a4dbf8f2399c6d99932a8
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a link farm and a callback lure suggests a phishing or scam attempt designed to lead the user to malicious infrastructure.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/pify?keyword=form+540-+es
    • http://madezezil.refurbishedca.com/uploads/1/3/2/7/132710621/3c90450caef.pdf
    • http://files.pianolessonsbyjulie.com/uploads/1/3/1/3/131380868/59baef08.pdf
    • http://files.foolsforchrist.net/uploads/1/3/0/9/130969115/gejisipuwibofokeveto.pdf
    • http://zuxop.reeniemcmains.com/uploads/1/3/0/7/130776031/gezomowuzarax-birexodetezep-kisotaxog.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/ip_reverse_lookup.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/26014934860.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/diablo_2_maphack_1._14_d.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0848/files/ganoluri.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/82002728703.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/printable_eye_chart.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/12373166242.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/nalosoverepewujewuxuguxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81236671698.pdf
    • https://cdn.shopify.com/s/files/1/0431/9854/6082/files/13634358523.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_off0000724c.bin
9a81d9e20d3bcccf4e38642f186cc508a7aff44c31ee65aea9ff334c8525e205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 4928 bytes
font_01_sfnt_off00008310.bin
0419cc7d37681fee6bd5af368cef9485ac7af08e8edc4313c6d658040f291c2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8310 10660 bytes

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