Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c12d7113a3de59…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 23:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ec13699c6e801d371b28e24937f0a82 SHA-1: ef9cb0644eff829e6daa02fa295ddef1713716d1 SHA-256: 63c12d7113a3de5996352b0fddc85a9e79ca0b802f5c3589080c86a81629322b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to a 'new york state prenuptial agreement template' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of many Shopify links indicates a link farm used to obscure the primary malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=new+york+state+prenuptial+agreement+template
    • http://files.alpineanimalhospital.us/uploads/1/3/0/9/130969278/d858c0.pdf
    • http://bupadof.softcinch.com/uploads/1/3/1/3/131380504/dd7776096a0e34b.pdf
    • http://files.nsnaconvention.org/uploads/1/3/1/3/131379343/jabowutanaje-gukeneruj-nazifalejita.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/2012_ford_fusion_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0449/4072/2331/files/social_accounting_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/tenor_banjo_chords.pdf
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/bebifumedapilejedesuvag.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/papokonuwafewupajesawa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/46783528315.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8436/files/chemistry_notes_for_class_11_chapter_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6117/files/23777191982.pdf
    • https://cdn.shopify.com/s/files/1/0430/9064/1047/files/33862441206.pdf
    • https://cdn.shopify.com/s/files/1/0438/6878/2757/files/93000187631.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/18958418926.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdf
    • https://cdn.shopify.com/s/files/1/0437/3010/8577/files/kakoz.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aa5.bin
dc9050dcde2d2f671c21fa3ca26a1ef9fcb4e0ffcdf340785936695c2eb28497		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA5 5368 bytes
font_01_sfnt_off00007cf3.bin
54d12c853d0b15c9c9ce2ff9f151c34a6897859bfbe4dae735532ebfe4dd4acb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF3 9884 bytes

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