Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5c164553f3f2a9…

MALICIOUS

PDF

40.1 KB Created: 2020-08-21 03:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48a323301b79e7523e63c5548a07483c SHA-1: 93993547fbf39eb4e88cbbebb7e5086d7461f5ef SHA-256: 7e5c164553f3f2a9f04915e189ed3fb440b05e5de933679134f2ffa1285877c6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=scratch+manuale+italiano'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external links, many of which point to benign-looking Shopify URLs but also include several unknown URLs hosted on various domains. The document body, though heavily obfuscated, contains references to the malicious URL and benign URLs, suggesting a lure to external content. The primary intent appears to be redirecting the user to malicious infrastructure.

Heuristics 3

  • 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.
  • 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/pify?keyword=scratch+manuale+italiano
    • http://povolejin.addysg-ffalala-education.com/uploads/1/3/2/7/132712072/xovivakulivituwikod.pdf
    • http://files.belaccommunications.com/uploads/1/3/1/4/131437158/9955582.pdf
    • http://files.ljlashartistry.com/uploads/1/3/2/6/132682787/sejofiratiwumagiza.pdf
    • http://kixosom.nscwritingcenter.com/uploads/1/3/1/1/131164250/7482503.pdf
    • http://vadixiv.asq1100.org/uploads/1/3/1/1/131164250/3630480.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/jazodapesisetonodod.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/1454155809.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/stop_words_list_python.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4700/files/30140282327.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/power_systems_engineering_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/4130/0380/files/acca_f9_study_text_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/sijixewovofajamelewosupem.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1915/files/b._ed_cet_online_form_2019.pdf
    • https://cdn.shopify.com/s/files/1/0435/4165/9797/files/32004934920.pdf
    • https://cdn.shopify.com/s/files/1/0433/9885/6867/files/clear_history_on_samsung_tablet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4694/4416/files/togewe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/10555245832.pdf
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/25283799887.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006149.bin
c8dccba50f9119c70dc82eaaa61ef963c76e0d3bd83cd3f75fada5d4db24835d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6149 4964 bytes
font_01_sfnt_off000071f6.bin
936a133935aeb670f968af21b06859f227cddcafe9d7d5d6a943d7df8d852613
pdf-font-stream PDF embedded font (sfnt) at offset 0x71F6 9824 bytes