Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d304764956585c…

MALICIOUS

PDF

46.5 KB Created: 2020-09-01 15:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 460778a5c4b6332c4ac27d63354fe32c SHA-1: bdbb589c1a6e56e5c31035f094633ed0ecfc894e SHA-256: 17d304764956585cc748a1bfa0c5e293acda124c2cae4e29c4015c0559d90ebd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, also contains a URL pointing to the same malicious redirector. This suggests the primary goal is to redirect users to malicious sites, likely for phishing or to download further malware.

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.club/wix?keyword=investigating+science+9+answers
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/spectrum_ancient_history_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/definicion_de_algoritmo_informatica.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/binomial_distribution_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/83358704754.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/gufomerixobuzebitebo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7471/4784/files/19344527745.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/katozitose.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4650/files/lifutefim.pdf
    • https://cdn.shopify.com/s/files/1/0461/9862/0323/files/nevuvo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6994/5509/files/nenajezina.pdf
    • https://cdn.shopify.com/s/files/1/0437/6353/1933/files/pizokipitapiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1709/9685/files/tunapu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/35596597121.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc303731d6eb4686ac276f30f5750e27.pdf
    • https://static.usrfiles.com/ugd/2ca09c_0d4ddde8b292463a8ef366d067e539f2.pdf
    • https://static.usrfiles.com/ugd/278743_c1c528cc7c8941ba88d57a0835db26a2.pdf
    • https://static.usrfiles.com/ugd/4479ed_52f81c8a277344689cc5b19e29bc8a7b.pdf
    • https://static.usrfiles.com/ugd/b3bc21_f3f4966a041a448c8c3594f21d495a5c.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_off0000776e.bin
843df58a0b072c2ecd4da9513e536e8bf68df62e0d0c45b3cf2f7be4e8ffd941		 pdf-font-stream PDF embedded font (sfnt) at offset 0x776E 5180 bytes
font_01_sfnt_off00008934.bin
9035c2166619382af1b0a16c6b74e91d59b4a7c17e16d3dfa76ec637d761f738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8934 10484 bytes

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