Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbf02cc2d56f8556…

MALICIOUS

PDF

60.3 KB Created: 2020-08-09 10:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 518fa9b5ba9a21ae55e3f5239d28c75a SHA-1: da4020b6ead792734a9a45bdc36117af4dff7c62 SHA-256: bbf02cc2d56f85565d536439121af246b90c679b0070f1a8989e6f1f6eec5fe3
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating it's a malicious redirector. One of the primary links points to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting the document's purpose is to redirect the user to malicious content via these links. The presence of numerous external PDF links also suggests a link farm or SEO manipulation tactic.

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/pify?keyword=modelo+biopsicosocial+psicologia+pdf
    • http://files.connieisakidis.com/uploads/1/3/0/7/130740323/50e87.pdf
    • http://files.johnkilkennypercussion.com/uploads/1/3/1/4/131438324/xaxumoravudus.pdf
    • http://files.malleeonlinesolutions.com/uploads/1/3/0/7/130739265/3bebd7.pdf
    • http://files.riverpilatesny.com/uploads/1/3/1/3/131398517/b6516b26.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/71288364978.pdf
    • https://cdn.shopify.com/s/files/1/0435/7976/8995/files/dunomarukojofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/54385699712.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/66301419968.pdf
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/nidiparalosozuxiwugibumup.pdf
    • https://cdn.shopify.com/s/files/1/0428/5690/6911/files/58180098115.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/labaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/ronatubujevutexeto.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/26379698625.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97046042130.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_off0000ab5b.bin
06ad7c034ff3892d347990c071fafaa8c9f9442ce433ae7463ea6b2070fa7b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5B 5372 bytes
font_01_sfnt_off0000bdc2.bin
da117ad638879448225a434f6288b6c2254ded1845543ee9804cd7490393c589		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC2 11284 bytes

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