Malicious PDF — malware analysis report

Static analysis result for SHA-256 7794e889b9ae2608…

MALICIOUS

PDF

41.7 KB Created: 2020-08-22 04:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f73df26904c2773e8a2c1c8ec5f97319 SHA-1: e9f67d5405e112d6c56371c4bf392959a9692d98 SHA-256: 7794e889b9ae260803c40c8d8e4fcce152676d09ce0569e3d25079675952f64d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains the text 'Simple swot analysis template word' and the malicious redirector URL, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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=simple+swot+analysis+template+word
    • http://files.taylorbibat.com/uploads/1/3/1/4/131437845/kinifikur.pdf
    • http://files.mdiwellness.com/uploads/1/3/1/3/131382447/latokukepaxo_masobubol_botewewumoxatov.pdf
    • http://fuliluni.electivese.nl/uploads/1/3/1/4/131408183/3347460.pdf
    • http://xeliti.janetreidwilsonfineart.com/uploads/1/3/2/6/132680813/zipibabig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/big_data_architect_s_handbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/risk_management_plan_clinical_trials_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/movizivadobopisija.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/53234432799.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/gefago.pdf
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/beastly_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/uninstall_league_of_legends.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/73043821278.pdf
    • https://cdn.shopify.com/s/files/1/0437/1306/9210/files/baofeng_uv-_5re_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3517/files/21773396757.pdf
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/9485421870.pdf
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/revista_atualidades_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9645/7884/files/73934485481.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_off0000652b.bin
6400124b0f15f4ad375f6a9d769325de008a2fcd308c6018d09ab14b4441ee7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x652B 5400 bytes
font_01_sfnt_off0000777a.bin
66d11c715a263e575f0fb7defd9b712e9f674c213c80a6d8dc458e2b29688890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777A 10092 bytes

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