Malicious PDF — malware analysis report

Static analysis result for SHA-256 80179560a4cf5bee…

MALICIOUS

PDF

41.7 KB Created: 2020-08-30 06:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b81b9d2e12112fa2bb27d07bfff441ee SHA-1: 342e17b81472a8813ecd42951a95964237f06341 SHA-256: 80179560a4cf5beec459ac16685d945b2977fab636c5313575194a65a9cd92d1
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, https://ttraff.com/wix?keyword=raspberry+pi+virtual+machine+windows, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attempt.

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=raspberry+pi+virtual+machine+windows
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/cc03df_152b9caa4ea543379fc61a9ca4c9744a.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0899e572a6240278ea90dcf232c4ce5.pdf
    • https://static.usrfiles.com/ugd/0df15e_25c3ac597f0d4aed9e07ba3dba4f823c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8e836acaa924b13917c393c764f084a.pdf
    • https://cdn.shopify.com/s/files/1/0439/5224/2856/files/cathode_ray_oscilloscope_working.pdf
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/frankie_and_benny_s_breakfast_menu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/xofivabuze.pdf
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/benchmarking_journal.pdf
    • https://cdn.shopify.com/s/files/1/0440/1401/0518/files/chutti_song_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/horizontal_and_vertical_axis_wind_turbine.pdf
    • https://cdn.shopify.com/s/files/1/0436/5775/6825/files/dapuwevasenobo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/83712513964.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/mdd_annex_ii_ec_declaration_of_conformity.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/gozopakoloj.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_off00006371.bin
cd60c63e0f55f2b681f7a59fbb0ab7f469f29b6da177ba8ba6eb6877ee3ebe5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 5712 bytes
font_01_sfnt_off000076d5.bin
16d6cff345c9190ce53100bd5e5e5d189abe1eaa842fab0c42b524b94feede0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D5 10144 bytes

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