Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5ebf603d679ac3…

MALICIOUS

PDF

40.5 KB Created: 2020-08-28 15:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e491dd1bfff7f085a564daab6eed029 SHA-1: 6d42e65cab93c305ab607359f69fb1402b3935e9 SHA-256: 6b5ebf603d679ac30063df4c41206ba443aa48da3a5bc94972930b08b8469a92
154 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as a Star Wars visual guide, which is a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external PDF links further supports a malicious intent, likely for SEO spam or to distribute further malicious content. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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=solo+a+star+wars+story+ultimate+visual+guide
    • http://files.greatlakesfrequencies.com/uploads/1/3/2/3/132303278/5653909.pdf
    • http://files.centralfloridamedium.com/uploads/1/3/1/3/131398461/ramizaz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/canon_vixia_hf_g40.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/finavuwuwefidadewatute.pdf
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/38522782878.pdf
    • https://cdn.shopify.com/s/files/1/0434/8385/7053/files/ap_state_bifurcation_act_2020_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0075/7398/files/82771890426.pdf
    • https://cdn.shopify.com/s/files/1/0434/4292/9821/files/86707366413.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/dartford_bridge_live_traffic_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1105/files/26423906739.pdf
    • https://cdn.shopify.com/s/files/1/0438/4066/7808/files/jasper_report_table_footer.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_off0000606f.bin
e1c9de67b83b84fbb8eafb59be002303bda7dac574407706f9c7a61678461559
pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 5504 bytes
font_01_sfnt_off00007322.bin
500c65054ceea0c31af42ae0901f79efdea9ec490b7221e718c1db4732211eca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7322 9904 bytes