Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c2b4516b8bbe9e…

MALICIOUS

PDF

40.0 KB Created: 2020-07-15 21:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: a53858a929606e7bce58f18969a11095 SHA-1: 432d5f18047f75ae69a4bab4351ae3bf23802f1d SHA-256: 06c2b4516b8bbe9e23449df482d71aac3a1c5d6ff0c624d7eead1ec5d719b151
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to drive traffic. The primary redirector URL, 'https://ttraff.com/wb?keyword=word%20ladder%20worksheets%20for%20adults', is flagged as malicious and used in conjunction with image lures. While no scripts were explicitly extracted, the PDF structure and the nature of the links suggest an attempt to lead users to malicious content, likely for phishing or malware distribution.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=word%20ladder%20worksheets%20for%20adults In PDF document text
    • http://files.mysmileprogram.com/uploads/1/3/0/8/130873758/vapujezolode-mupowirijugokun.pdfIn PDF document text
    • http://files.tinforestfarm.com/uploads/1/3/1/6/131607063/salevozezigewod.pdfIn PDF document text
    • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuvuwagel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/84833977861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/48656073037.pdfIn PDF document text
    • https://fakemoj.files.wordpress.com/2020/06/70426788511.pdfIn PDF document text
    • https://megewusebu.files.wordpress.com/2020/06/nowokak.pdfIn PDF document text
    • https://najuwimaz.files.wordpress.com/2020/07/bidopa.pdfIn PDF document text
    • https://ditilepikap.files.wordpress.com/2020/06/dozer.pdfIn PDF document text
    • https://safanam.files.wordpress.com/2020/07/20338817024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/86164288727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3419/7666/files/gajebozapufepum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6165/files/20652499137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/48566787018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83406059157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/dujataf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6859/7158/files/38127915513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0962/1664/files/miwixewikanogun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/muxomebe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F59 4892 bytes
SHA-256: 6f48f9306d6eb8e1837853f9d2af7243bcb46649717242d3eb49aa0a777a7e39
font_01_sfnt_off00007030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7030 9996 bytes
SHA-256: 6152c5c71bb15bcbfa6743169969079e6c26ae81d567e66eac2c32709ce04c12