Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba69726c4da8b03…

MALICIOUS

PDF

69.0 KB Created: 2020-08-25 03:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3142e70f9756a2c6b2fe60f5e0036c55 SHA-1: c83e7d85053c017309bde802427d05a33afcf312 SHA-256: eba69726c4da8b03100d8f02bda63ce32780c73dbfb523c94a490d6de3e66002
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=hazleton+standard+speaker+police+reports'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

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=hazleton+standard+speaker+police+reports
    • http://vaxeli.honesthomeinspector.com/uploads/1/3/1/0/131070197/8dcb1.pdf
    • http://files.stayprotected.org/uploads/1/3/1/3/131379894/jafosugukek.pdf
    • http://files.fallonsdailytoast.com/uploads/1/3/2/6/132681769/9429494.pdf
    • http://mugun.paslibrary.com/uploads/1/3/2/6/132683001/4359540.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/44581915956.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8816/files/nozanidowovolivisuvobapu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5215/4532/files/16917040929.pdf
    • https://cdn.shopify.com/s/files/1/0432/2797/1741/files/tesis_del_bullying_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0435/7573/8527/files/30911459348.pdf
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/download_kitab_al_mughni.pdf
    • https://cdn.shopify.com/s/files/1/0437/7837/5831/files/africa_twin_2020_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/9010/6775/files/english_grammar_test_b1_b2.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_off0000c7d8.bin
03d4b2043d1ba8b776886e485c78ff9cff263e2c72ab9e31382e6549543d5481
pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D8 5140 bytes
font_01_sfnt_off0000d967.bin
460a7b96ed92233a565895acfb9d85737332e1ad29dfbdf6851f6b1a753261c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xD967 14468 bytes