Malicious PDF — malware analysis report

Static analysis result for SHA-256 297325d528a01861…

MALICIOUS

PDF

45.9 KB Created: 2020-08-18 17:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba1fcf1b714d621c9641aa4c110bda49 SHA-1: c23fb35a1655ff521bf0424c0ba932094addcb1f SHA-256: 297325d528a0186184cffd779a37aaeec8e57250f3ddef43d5bd899cdd17837d
150 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 known malicious redirector. This indicates a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=ampicillin+mode+of+action+pdf, which is flagged as a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=ampicillin+mode+of+action+pdf
    • http://gujanaku.dogologyct.com/uploads/1/3/0/9/130969242/1299760.pdf
    • http://files.randomaccessmeghann.com/uploads/1/3/1/6/131637635/712a6.pdf
    • http://files.hooosintung.com/uploads/1/3/2/6/132695576/e2198391.pdf
    • http://pifejadaf.2ndnaturedesign.net/uploads/1/3/1/6/131606490/wiranetoj.pdf
    • http://wokevofil.juvemtpleasant.com/uploads/1/3/0/9/130969525/3821054.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/18863723818.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugasodaliza.pdf
    • https://cdn.shopify.com/s/files/1/0428/7037/4566/files/45961727744.pdf
    • https://cdn.shopify.com/s/files/1/0437/2371/8824/files/56557749972.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/11689601353.pdf
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/10945675885.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/12th_maths_formulas_list_hsc.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doworefobose.pdf
    • https://cdn.shopify.com/s/files/1/0435/5362/0136/files/adding_worksheets_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/47083635770.pdf
    • https://cdn.shopify.com/s/files/1/0432/5199/0691/files/da_form_1970.pdf
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/jaruxunufuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/titrasi_argentometri.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/amumu_top_build.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_off00007484.bin
979f1edb6d62315b72487fb75e5585ad83694531c253b1e14e0ce440d651bdcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7484 5016 bytes
font_01_sfnt_off00008578.bin
3557c798695aaa47a9669c5cc3ce631b7c911692e4786e8eb7d73a752c48fca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8578 11532 bytes

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