Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a4867e34dfd45a…

MALICIOUS

PDF

44.7 KB Created: 2020-09-03 10:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf4a7a393d89d245ee1f9280459ef969 SHA-1: 230207c67d4eba21b014b849ccb49e89e2984dce SHA-256: 00a4867e34dfd45ac4e1bd1d86b02af3722d170f1e79b7380e5d2dbc9979ed1b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical finding of a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous Shopify links suggests an attempt to disguise the malicious intent within a seemingly legitimate context.

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.link/pify?keyword=italian+deli+meats+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/trigonometry_inverse_formula.pdf
    • https://cdn.shopify.com/s/files/1/0431/7875/4199/files/12486878189.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/75788934582.pdf
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/nugegeliro.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/senipanod.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/voridowaxerekigesutuset.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/pavovezim.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3669/files/convert_numbers_to_words.pdf
    • https://static.usrfiles.com/ugd/f1d680_fc8ae23931f74e15b3878f656b865486.pdf
    • https://static.usrfiles.com/ugd/52b593_4b6230f80a994773a8d3816ff9d80a83.pdf
    • https://static.usrfiles.com/ugd/8716ab_0956a1b2d10e4904a939329f312e2d5d.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_4bdd5f54f3e549a292a7f57689cccc8a.pdf
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/38095851766.pdf
    • https://cdn.shopify.com/s/files/1/0432/0700/0219/files/bipolar_disorder_treatment_guidelines_nice.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6808/files/95081536024.pdf
    • https://cdn.shopify.com/s/files/1/0438/3644/0726/files/zufuni.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.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_off0000720e.bin
f1ba35f878895b6ad7bf9170506d629cc9cf9605288364f50d6848b2dd5fd51f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720E 4988 bytes
font_01_sfnt_off000082f3.bin
1e70d49dad38447dc8eaabba44da13c5d011d7264aaf1cd53940635f8079b012		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F3 10248 bytes

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