Malicious PDF — malware analysis report

Static analysis result for SHA-256 05276ebdc92c3d1a…

MALICIOUS

PDF

45.0 KB Created: 2020-08-20 19:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22ba6abdad981c99958d3507c1f19b84 SHA-1: 6256d3134238051ed37aaade762aced204052eb3 SHA-256: 05276ebdc92c3d1a2776bc29d627fbe05a20d02f6d062d6af063b4657423be87
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 external PDF files hosted on Shopify. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of the redirector and link farm points to an attempt to lead users to malicious content.

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.cc/pify?keyword=gold+deco+foil+transfer+sheets
    • http://files.bremnerglassandglazing.com/uploads/1/3/0/9/130969249/guwugenijuwexo.pdf
    • http://deregefe.thehairchest.com/uploads/1/3/0/8/130874431/niduruputideg-dexep-neninopav-nawelibob.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2557/1733/files/burgerking_coupons_august_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/design_of_classroom_action_research.pdf
    • https://cdn.shopify.com/s/files/1/0437/4095/4773/files/momodada.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/ralanirivizusorevumem.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/towobivilojoludetowek.pdf
    • https://cdn.shopify.com/s/files/1/0437/8044/0215/files/ryobi_weed_eater_head.pdf
    • https://cdn.shopify.com/s/files/1/0437/2824/0794/files/oregon_driver_s_license_number_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/52549298050.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/biology_revision_notes_form_two.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/fasipoxuxusirume.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/gifojixamijun.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005943.bin
f81a6c6e6b26f7adbe7fe88c528cd343acbdfa73fd09d7e0f9f1426f89cb4f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5943 5140 bytes
font_01_sfnt_off00006ab1.bin
2b89fcfa32c9d54ef55c45fc4ac79ae1ca9942a5fd9375c3fb2d135f9d569ba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB1 10880 bytes
font_02_sfnt_off00009016.bin
207faf14306426b668b87aba0c9d447b8ba40b67f0f7b18660ffa0d3c8132265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9016 16224 bytes

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