Malicious PDF — malware analysis report

Static analysis result for SHA-256 50771a2221cc5940…

MALICIOUS

PDF

41.1 KB Created: 2020-09-01 17:27:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 406ad338ea20bb948d31f7f793ce0357 SHA-1: 468a5180b315098419cd4c13b03c729658020924 SHA-256: 50771a2221cc5940273de3e0835c9efcba07cf2a18cd398c083817bd07ffe4f5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF document contains embedded links that lead to a redirector URL, which is a common tactic for phishing or malware distribution. The document body, though partially corrupted, contains text related to 'thank you' and the malicious URL, suggesting a social engineering lure. The presence of a PDF link farm heuristic indicates the document is designed to host numerous external links, likely for SEO poisoning or to distribute malicious content.

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/wix?keyword=ucapan+terima+kasih+dalam+bahasa+inggris+formal
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/bumimeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/gulefukuturitufuwip.pdf
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/nupemutefesudusarilipejox.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/ximiforem.pdf
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/51845151808.pdf
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/heart_failure_aha_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0452/2786/8320/files/mortar_mix_ratio.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/runciman_la_caida_de_constantinopla.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/vuzirimo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53151925343.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/56468279140.pdf
    • https://cdn.shopify.com/s/files/1/0459/7248/8359/files/biology_notes_form_1_to_4.pdf
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/bebiwivulekanavafuvomegat.pdf
    • https://cdn.shopify.com/s/files/1/0437/3636/7265/files/android_button_animation_github.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_off000061d7.bin
597ff081ad1fd01d3c1416e71708f87fab456ff2fcfec0d2f374f644d785da8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D7 5764 bytes
font_01_sfnt_off0000754a.bin
d049f64baa0fff2c5368da197626f94f161c3183eb92eb0c165f8ec72d5d7e6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754A 10008 bytes

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