Malicious PDF — malware analysis report

Static analysis result for SHA-256 680595f508a6d33f…

MALICIOUS

PDF

40.0 KB Created: 2020-09-02 07:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0368c1402062ac729acc5b0aa4186bed SHA-1: 52b1bfe985a1951774da587d18b4f200fc6da25f SHA-256: 680595f508a6d33f3c768830f58ea08ab7b33fcc583e93fa8e0b0c7b501bc604
154 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically to 'https://ttraff.com/wix?keyword=caravan+war+mod+apk+latest+version'. This tactic is often used to distribute malware or phish for credentials. The ML classifier strongly indicated maliciousness, and the presence of numerous external links supports a malicious intent.

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=caravan+war+mod+apk+latest+version
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7398/4919/files/livre_automates_programmables_industriels.pdf
    • https://cdn.shopify.com/s/files/1/0430/8461/1733/files/savage_axis_parts.pdf
    • https://cdn.shopify.com/s/files/1/0431/5499/7402/files/solar_energy_file_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/9494/8517/files/31390845929.pdf
    • https://cdn.shopify.com/s/files/1/0439/2606/1224/files/android_auto_wireless_phone_compatibility_list.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1038/files/barclays_app_android_p.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/48424861251.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/korojuxepijevamofakunupul.pdf
    • https://cdn.shopify.com/s/files/1/0430/6668/7639/files/99570967560.pdf
    • https://cdn.shopify.com/s/files/1/0438/2362/8450/files/un_livre_pour_apprendre_l_anglais.pdf
    • https://static.usrfiles.com/ugd/bfd78a_f7c9ee1547004adbb2c85acf8e7c4265.pdf
    • https://static.usrfiles.com/ugd/45fd81_055333f4878947afa42542913bea0884.pdf
    • https://static.usrfiles.com/ugd/a0905b_3f129da302b344249d0e3cda9ad34421.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_213fc94b7dc5494aa80698c1d0cba04c.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_off00005d32.bin
dc5c8153dea0e6e794e8c5dcd79bc0e218e747ce7d75fd139f28868e55251b8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D32 5224 bytes
font_01_sfnt_off00006ef3.bin
f876c0af4fac42d3b1671d5a40a44485e0b0012add144f387fdb7b39f9c272f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF3 10696 bytes