Malicious PDF — malware analysis report

Static analysis result for SHA-256 417cc69afb47e516…

MALICIOUS

PDF

47.5 KB Created: 2020-10-28 07:55:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 46cff71a6cdfee8a80276e44a7756a6f SHA-1: 1ca9db7c9dfb8da543dd5c0d37073b8f87773d32 SHA-256: 417cc69afb47e516b7864330503aa7cfcce06f6b81dab82e814c08970b4be1b1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with critical heuristics indicating it's a redirector and part of an SEO link farm. The primary redirector URL is 'https://ggtraff.ru/strik?keyword=duran+south+pell+city+al', which points to known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and other links to Weebly-hosted PDFs, suggesting a coordinated effort to drive traffic to malicious sites, likely for phishing or malware delivery.

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://ggtraff.ru/strik?keyword=duran+south+pell+city+al In PDF document text
    • https://wetejitaxazis.weebly.com/uploads/1/3/4/3/134306742/315fe8cb2e.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/3857256.pdfIn PDF document text
    • https://pefuxagofir.weebly.com/uploads/1/3/4/3/134359429/7445351.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/008cfbf2-9344-4208-bd4e-639ac1bb0008/21418247815.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/xaxaginagewamupab.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/434501369.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/rabawigenupunoximebozo.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/54099778574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5732/2430/files/mythbusters_tanker_crush_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1262/8895/files/springfield_hospital_center_abandoned.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/7781361136.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/90270244967.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/bopalik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/redistributing_routing_protocols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9342/5316/files/chaldean_oracles_and_theurgy.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55AB 5004 bytes
SHA-256: de948cdf9f3976f90ba04a14b1077d4cdc59a3bee2e621e52321a5a3074c8a12
font_01_sfnt_off000066b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B1 11816 bytes
SHA-256: 41616434043c88a2a6ae791709888485e31841ff0767c0079567ea6c2eaa7cd9
font_02_sfnt_off00008db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB9 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_03_sfnt_off0000a2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2