Malicious PDF — malware analysis report

Static analysis result for SHA-256 76df2afaa43097c5…

MALICIOUS

PDF

49.6 KB Created: 2020-08-30 01:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc407ae2d2148b23a5702bd58194bb4d SHA-1: b80844366c4ecddc24915e8811a7bf9d1c112518 SHA-256: 76df2afaa43097c57885de9a32ac51c3be5c488b19ceb7ccb2235ce1b722ed55
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically `https://ttraff.com/wix?keyword=thillai+ambala+nataraja+song+downloa`. This technique is often used to obscure the true destination and deliver malware or phishing content. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded links supports a malicious intent.

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/wix?keyword=thillai+ambala+nataraja+song+downloa
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/feresafexomi.pdf
    • https://cdn.shopify.com/s/files/1/0463/2176/2461/files/nsfas_application_form_2019_ukzn.pdf
    • https://cdn.shopify.com/s/files/1/0431/9605/5711/files/gossip_girl_cecily_von_ziegesar_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/64147670692.pdf
    • https://cdn.shopify.com/s/files/1/0437/1005/4554/files/fancybox_popup_login_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/appraisal_answers_examples.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/warajivusakogozefefepozob.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/sikukebiloz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/21154213125.pdf
    • https://cdn.shopify.com/s/files/1/0435/7043/0115/files/highschool_dxd_wikia.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/jepedubitola.pdf
    • https://cdn.shopify.com/s/files/1/0433/0831/8878/files/logic_pro_x_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/tufizagale.pdf
    • https://static.usrfiles.com/ugd/5ed537_2eb727c12e314a219ce4af32911a6100.pdf
    • https://static.usrfiles.com/ugd/8127dd_3d6e2f905ce2467291b9be09613b1920.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e3cc7ffee334471b73d94ae21f8de02.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064d1.bin
11ee9dea06ffa754018cf80e2b6b5cf80dd0893b5c19b82d7c8fc6b8fbb2dd1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 5496 bytes
font_01_sfnt_off0000775e.bin
505f069420887e14ccdd26389ac72e8fbdc37de66b33972d6a0e212c42661bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775E 11724 bytes
font_02_sfnt_off00009445.bin
04c43cec7035a36066e314090d76877f9e22148716cc79cc6d6f67c478f6b09a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9445 10860 bytes

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