Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ac8476da511458…

MALICIOUS

PDF

47.7 KB Created: 2020-08-16 17:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 981550da83d24a7f9b7adae9b5f32878 SHA-1: 565902e229600b3cb4dbf6e03ebbcec7bdc0279c SHA-256: f7ac8476da511458511da5835358bc9691d272356aebc7d195cd8b83182572e7
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=bestwap+new+song++2019', is identified as a malicious redirector. The document body contains garbled text but includes the same malicious URL, reinforcing its likely use in a phishing or malware distribution scheme.

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.cc/pify?keyword=bestwap+new+song++2019
    • http://mojed.georgetownenvironmentalhistory.org/uploads/1/3/1/4/131406343/3239fd6c7.pdf
    • http://xorupujon.richardsonsafedriving.com/uploads/1/3/1/3/131383309/ce745.pdf
    • http://monozi.nlpandmbitcoach.training/uploads/1/3/1/3/131398020/mebuzemapawow-jewerabosax-wenegosinigovad.pdf
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/kipusidexigonanesep.pdf
    • https://cdn.shopify.com/s/files/1/0450/0278/4936/files/seran_pandiyan_songs_free_starmusiq.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/nursery_and_primary_school_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/74693078163.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/nimajosilusebanodeloxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/97665120230.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/9060904473.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6018/files/2958712794.pdf
    • https://cdn.shopify.com/s/files/1/0441/3780/8024/files/xudasomirike.pdf
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/fingerprint_based_attendance_system_using_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/57956332080.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/60581221834.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_off000071af.bin
50e8c55f0d804d72d77e42d21ef9003d8e10e08b446f52dc99a0f34c069cf323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AF 5480 bytes
font_01_sfnt_off00008491.bin
188536328426601587622e42a41e676b6c52ade657d65688348faacf83e7e2fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8491 14332 bytes

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