Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eba684fc39c9c70…

MALICIOUS

PDF

43.9 KB Created: 2020-08-23 20:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22fcb81e00463a88c5bdb238f53ab789 SHA-1: 4c849a971aa2c40babbd313894977b96b491c9a7 SHA-256: 5eba684fc39c9c7012352345c8ee05414dd466639ff01913adb1a0f65ca76db6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a known malicious redirector, suggesting an attempt to lead the user to a malicious site. The document body, though partially corrupted, contains text related to a "Deltran battery tender owners manual" and a URL that appears to be part of a link farm, indicating a potential phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=deltran+battery+tender+owners+manual
    • http://files.muchzeal.com/uploads/1/3/0/9/130969545/2992d.pdf
    • http://files.sarahgancher.org/uploads/1/3/0/7/130775135/rakugu_luvixifij.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/pujimuwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/65005966588.pdf
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/modern_cv_templates_doc.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/mofukusatogogi.pdf
    • https://cdn.shopify.com/s/files/1/0466/4963/9077/files/hallelujah_chorus_piano_solo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/79729363222.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/ts_eamcet_bipc_allotment_order_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/jurari.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9597/files/numbers_in_english_1_to_1000_in_words.pdf
    • https://cdn.shopify.com/s/files/1/0457/3403/5622/files/meri_behna_hai_video.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_off000065c6.bin
758a940b33d0b9dd43851977fb2c4914cc52866bf52844d45c37c845ffe07632
pdf-font-stream PDF embedded font (sfnt) at offset 0x65C6 1892 bytes
font_01_sfnt_off00006eb4.bin
c5fabad3597c9fbfd02a5b5f41c2d3c5e08c982a599c7eb2fe5ddf051a9fd851
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB4 5304 bytes
font_02_sfnt_off000080b6.bin
bc7315043b51db6f21f235cbdd6f5797b7e7eec3b30d3558a5ec56a144e0bde6
pdf-font-stream PDF embedded font (sfnt) at offset 0x80B6 9900 bytes