Malicious PDF — malware analysis report

Static analysis result for SHA-256 7103e3eb48ac66ed…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 04:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a05b316fe9f78c2bf5d4d1e8b87528cd SHA-1: 4e2be3b471f5414b9864b625edfce1076588548e SHA-256: 7103e3eb48ac66ed47d0c53b0f4fe5e9a3012165aaad54acd069215130423b54
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=honda+xr650l+parts, which is flagged as a malicious redirector. The presence of numerous PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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/wix?keyword=honda+xr650l+parts
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0441/0481/0648/files/86792959856.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/bellini_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/apk_alight_motion_pro_for_android.pdf
    • https://static.usrfiles.com/ugd/fb5067_13eab2b5d6534d5ab3d5781daca9b358.pdf
    • https://static.usrfiles.com/ugd/e73fea_a16fdd9b046149bb9ee583c1c2ac512f.pdf
    • https://static.usrfiles.com/ugd/45e30f_7cba949d1f2b4e49ad3a7086f8e8ff1e.pdf
    • https://static.usrfiles.com/ugd/6f7357_7f1a2ad5ff0540bea7409fb95f6e6111.pdf
    • https://static.usrfiles.com/ugd/5926b4_5b126fda7e8149c0afa01563a5548e19.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/ankle_sprain_physiotherapy_management.pdf
    • https://cdn.shopify.com/s/files/1/0461/4841/9747/files/ielts_academic_reading_practice_test_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/8704/3496/files/pdf_to_word_converter_software_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/asterix_obelix_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0465/7614/0455/files/vemogip.pdf
    • https://static.usrfiles.com/ugd/b8c837_68ddddd5a1754db5928c765591c206e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_efd06bd06baf434aa44f185218b28860.pdf
    • https://static.usrfiles.com/ugd/2ddd39_ace46c5698d3482e9510892755db21c7.pdf
    • https://static.usrfiles.com/ugd/3b7182_1366ddc08a444b52a200f942e144c766.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_off00006367.bin
8487c359cc1d749ea8b767b77973b741d9c1c3df9ff4b83bab65fdeec6ec9ffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6367 5404 bytes
font_01_sfnt_off000075d0.bin
cd70aec34067dae454401de09332c25cb96fdba0ac515263cfae199e44af728c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D0 10648 bytes

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