Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2f3562325cdd2c…

MALICIOUS

PDF

54.8 KB Created: 2020-08-10 14:30:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f59623a3df7fede4c2b61ebc5b59196 SHA-1: 7f3894f5d8d73fa4407241567d4f32778b1005b3 SHA-256: 7c2f3562325cdd2cd85e281004b97b133ab0d9faf6222a886dbc0eb51c0fd0d7
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, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link `https://ttraff.com/pify?keyword=bsf+nic+in+2020+pdf` points to known malicious infrastructure. The heuristic PDF_SEO_LINK_FARM further suggests that the document is designed to host numerous external links, likely for SEO poisoning or to distribute malicious content. No scripts were extracted from this sample.

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=bsf+nic+in+2020+pdf
    • http://files.tydafydd.co.uk/uploads/1/3/0/9/130969573/xadukot-dugagelibi-jexerikigu-nibinavo.pdf
    • http://files.myeastcampushome.com/uploads/1/3/1/6/131606331/3766053.pdf
    • http://vekawomu.tripointlutheranparish.com/uploads/1/3/0/8/130873851/pomavikox.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5013/files/58148315707.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6578/files/chelsea_vs_newcastle_live_stream.pdf
    • https://cdn.shopify.com/s/files/1/0429/4426/6399/files/penakulexakogewipe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/cardio_workout_plan_for_weight_loss.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7014/files/awareness_theory.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/zemalawirixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/47008327698.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8858/files/fourier_analysis_and_nonlinear_partial_differential_equations.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30812088679.pdf
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/jojovak.pdf
    • https://cdn.shopify.com/s/files/1/0434/3293/5574/files/29519132692.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_off00008fcd.bin
bfd7ea730a6e00b08194a3b89ed8aff7defd9826e727a70187947cffb02e02ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCD 5132 bytes
font_01_sfnt_off0000a160.bin
e02f5ed681ace2dc41cc8e727ee1a0d5414c4826ffdcb3d880d3e97ad740f648		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA160 14136 bytes

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