Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ae73dc27d037679…

MALICIOUS

PDF

40.2 KB Created: 2020-08-12 13:35:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ee256e6b41cdccd01e1617429e6bf94 SHA-1: f542146475848c1ddd483cdb7cc7d597b7949e47 SHA-256: 6ae73dc27d037679cd680f8f885d7a9573f2eac7a773f45454232abf351b83ef
162 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=account+all+formula+pdf'. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to trick the user into clicking this link, likely as part of a phishing or scam campaign. While no scripts were directly extracted, the PDF structure and embedded links are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=account+all+formula+pdf
    • http://files.nightsongpettingzoo.com/uploads/1/3/1/6/131606121/zegodikaxa.pdf
    • http://files.raquelmeraki.com/uploads/1/3/2/7/132740860/3354846.pdf
    • http://miwokof.helengblake.com/uploads/1/3/2/7/132741555/d4988badaa.pdf
    • http://files.ashboothgraphics.co.uk/uploads/1/3/1/4/131437535/jemezenezudaki_sasegiw_rukovuveg_liniveru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/prism_spectrometer.pdf
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/77053602756.pdf
    • https://cdn.shopify.com/s/files/1/0432/9275/4076/files/clipsal_product_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/32872759375.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/destro_warlock_stat_priority.pdf
    • https://cdn.shopify.com/s/files/1/0434/7189/6741/files/26727690164.pdf
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/52550345970.pdf
    • https://cdn.shopify.com/s/files/1/0430/2949/5959/files/loxitumuvur.pdf
    • https://cdn.shopify.com/s/files/1/0433/8866/6005/files/rigamemipuzokubupiru.pdf
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/50970918285.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/the_weeknd_mp3_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/lomomojubenumoli.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_off00005fed.bin
798efad341e3f91ec7ccf600eb7ca124f811afeeedba473f371bb4c437d53b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FED 5112 bytes
font_01_sfnt_off0000713b.bin
6f702c3170441a442d00e91da9a344ebc4f8956bc93b418cfa66fad92c916868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713B 10240 bytes

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