Malicious PDF — malware analysis report

Static analysis result for SHA-256 643634314b898b38…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 16:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08fb4fcc3af1e8bdfef9b20126a3876b SHA-1: 5cb731aa92fcc49aeb0a5155ef92cc0e5fb06685 SHA-256: 643634314b898b38b97423e70535bdece3446e8dba5982aa591e5d06b310b867
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, reinforcing the intent to redirect users. The presence of numerous PDF links and a malicious redirector indicates a campaign to drive traffic to potentially harmful sites.

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.com/wb?keyword=human%20anatomy%20for%20drawing%20beginners%20pdf
    • http://files.stphilipsgreenville.com/uploads/1/3/1/1/131163578/jogalodaxalato_somosoji_jimalalepumuxiw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/carl_jung_liber_novus.pdf
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/vapaxisuwof.pdf
    • https://cdn.shopify.com/s/files/1/0436/8806/7225/files/fowiteraled.pdf
    • https://cdn.shopify.com/s/files/1/0428/8793/8211/files/vemutifomejupegoral.pdf
    • https://cdn.shopify.com/s/files/1/0434/0108/5082/files/tapafozirovexuno.pdf
    • https://cdn.shopify.com/s/files/1/0447/5109/3914/files/hoffmann_bromamide_reaction.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/xukunobijigosovud.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/serious_adverse_event_reporting_timelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/41934082757.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/5218461515.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/calidad_de_vida_segun_la_oms.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/bedroom_vocabulary_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/35278820666.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_off00006070.bin
b880802e1ce8388bfb6d14fb58c5ca8676095862920f09a918403d32e335ee88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6070 5624 bytes
font_01_sfnt_off00007389.bin
c1f570e3d8a895b9746363ee339259b1c3b0e7a117548a15416b7185a39feaf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7389 10152 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.