Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3aa011ac1b218c…

MALICIOUS

PDF

41.7 KB Created: 2020-08-18 18:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc18a72e517139de4418f3d3e8c5745c SHA-1: abcc459cdf2e49f604b17c0bb93c5c2d9af56c9d SHA-256: cb3aa011ac1b218c90cb784aba9a6ab839f3beeebb216af92d18e98e23f708e0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on 'cdn.shopify.com'. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.com/pify?keyword=square+root+of+400+in+radical+form' is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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/pify?keyword=square+root+of+400+in+radical+form
    • http://files.marriagecounselingmontclair.com/uploads/1/3/0/9/130969452/623802.pdf
    • http://files.geyserlandcatclub.co.nz/uploads/1/3/1/6/131606256/3453861.pdf
    • http://runas.capitalmohawkprism.org/uploads/1/3/0/8/130874218/livazeret_domesapolis_dulixozuxudakuv_nejovusitu.pdf
    • http://kuzuf.jwcyclerepaircentre.com/uploads/1/3/2/7/132740606/moxutelunuremu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/vijamavapewenoligag.pdf
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/33945389145.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/eyebrow_text_face.pdf
    • https://cdn.shopify.com/s/files/1/0429/8588/1759/files/complex_sentence_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/kiteleropisitaxolojibup.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/pamivemurefegub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/rovizotifuwuluw.pdf
    • https://cdn.shopify.com/s/files/1/0440/1872/9125/files/xedabuwixuke.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/81380999851.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/pupaxezujuxerenuxus.pdf
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/gokovukozididugekixijitat.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e14.bin
060e2182c4876d360155933045743b9fa7c8dddf117586efd34d1b74f5a031b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E14 5448 bytes
font_01_sfnt_off00006084.bin
23e3e87c16a131a217448343e99ab1d990d425dce3a25f915c3c7cc8353a79bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 10548 bytes
font_02_sfnt_off000084be.bin
fb10e5badbbf29d6a05184c763452604a6d256f7c208a2bb674868c670b14a78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84BE 16144 bytes

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