Malicious PDF — malware analysis report

Static analysis result for SHA-256 0466709241f24a7a…

MALICIOUS

PDF

70.3 KB Created: 2020-08-30 06:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6fa04bbb20ebe72a513e04cd67bd460 SHA-1: c9cb4c2ddc095cc80e1df6d3724b05d08502ea80 SHA-256: 0466709241f24a7a35ed1ea9b7d98f45fad73f1578045bfe37c9b99c225d5f29
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one identified as a malicious redirector. The document body text, though partially corrupted, includes keywords related to software downloads and a URL that matches the malicious redirector. This suggests a phishing attempt to trick users into visiting a malicious site.

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=mac+os+support+unity+download+2019
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6737/5777/files/regatapotejib.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/3994392769.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/dragon_story_breeding_calculator.pdf
    • https://static.usrfiles.com/ugd/b8c837_455f551428b740809a72f88b29ea7ddc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce9fe9742dad456c8961b1dc3fe4173d.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_b49663c2e2554685a14592ad7bdcd814.pdf
    • https://static.usrfiles.com/ugd/cc14e4_4df9bfba478f461d9eda3a7a9f7e03c0.pdf
    • https://static.usrfiles.com/ugd/0aab01_d2452de2eba14b358ed92387504f8307.pdf
    • https://cdn.shopify.com/s/files/1/0429/2434/3462/files/unit_converter_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/39128155516.pdf
    • https://cdn.shopify.com/s/files/1/0434/8257/9110/files/market_leader_elementary_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0441/3777/5256/files/sosowuxokuzir.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6f2e82f2056476c8f128984f862d88f.pdf
    • https://static.usrfiles.com/ugd/3f80ec_5cc929c8d3284189973aaf70e5f42a2f.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_off0000a84d.bin
850d9ef6d587521ffca0f51fe27b4d83cd95e1fc751dbad13a06532289624480
pdf-font-stream PDF embedded font (sfnt) at offset 0xA84D 11360 bytes
font_01_sfnt_off0000cd79.bin
61598e248e80106a5a0d8e48cc7e22824c6b2e57eb8e5fc50cde7652dabdd382
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD79 5748 bytes
font_02_sfnt_off0000e134.bin
246c741f002917bb0d8447cf8d5ba8910b952ed35493054ec6717ab9ebfd8ad8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 13200 bytes