Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc4b076407f1411…

MALICIOUS

PDF

34.8 KB Created: 2020-08-29 19:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b1bedc31beb8aaf85bf4f347178a6ff SHA-1: d66b63a9bd7e7d1c6bdc5320fe984fda817c942b SHA-256: 5cc4b076407f1411b659b56ea5c6d567bec8a9299dab62e98bd43b5249e1f7b5
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the same malicious URL and references a wedding, likely a lure. The presence of embedded URLs and the ML classifier's high confidence indicate malicious intent, likely to redirect users to malicious infrastructure.

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.com/wix?keyword=michelle+babin+wedding
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/54314413386.pdf
    • https://cdn.shopify.com/s/files/1/0429/3463/2607/files/sexigilomiralulavox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/virtue_ethics_theory.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/insurance_broker_definition.pdf
    • https://cdn.shopify.com/s/files/1/0462/0084/8537/files/instruction_decoder_verilog.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/xusebibivelezanur.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/64179693083.pdf
    • https://cdn.shopify.com/s/files/1/0440/7944/8216/files/52758054453.pdf
    • https://cdn.shopify.com/s/files/1/0437/0939/9193/files/81947345610.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1386/files/sikesamemeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/ccd_vs_cmos.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/an_introduction_to_actuarial_mathematics_gupta.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_off00004bc4.bin
b388d021afad2889a8df7de672e518cf2087d2619646356b27dbf14112fd7cb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC4 5164 bytes
font_01_sfnt_off00005d5e.bin
266a8f54d1565ea7d9d39beed8653089cfb533e442231a2b4f376f5f363df1b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5E 9744 bytes