Malicious PDF — malware analysis report

Static analysis result for SHA-256 a88bf423bce2de4b…

MALICIOUS

PDF

45.7 KB Created: 2020-08-15 21:36:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff9d903ab0d5d0a1edcf538bd48102e7 SHA-1: 4bde2b2b21b720c7c6b13c4ca74c3589dfee67fd SHA-256: a88bf423bce2de4bc92bde52a333978a2b12f752cf3f6bde3c153e94c349442d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a redirector. The primary malicious link, https://ttraff.com/wb?keyword=philippine%20history%20by%20gregorio%20zaide%20pdf, is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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/wb?keyword=philippine%20history%20by%20gregorio%20zaide%20pdf
    • http://bekivafi.danibostick.net/uploads/1/3/0/8/130814411/3aea3dde.pdf
    • http://files.scotttroxelart.com/uploads/1/3/1/3/131383514/be6bd4ab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5829/0070/files/kuxavetokuxewolarokuwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/vujupitum.pdf
    • https://cdn.shopify.com/s/files/1/0440/6899/5222/files/milogefo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5395/7799/files/weight_training_guide_shoulders.pdf
    • https://cdn.shopify.com/s/files/1/0430/6613/0593/files/xegagojububo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/fci_recruitment_2020_advertisement.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/physics_final_exam_study_guide_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/1353/6925/files/rijapuxaloxepado.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3163/files/88237500944.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_off00007521.bin
30712a4fbbf6967b7a1064a80f6fe252181560193f65687dceadc55e6fbf908c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7521 5596 bytes
font_01_sfnt_off0000881c.bin
c4708f8f71d6a037b80dc5471eaa16afbbf261ddb8dac7dd13eb5ce55c7a6d04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x881C 10044 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.