Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfc2a44a717f67d…

MALICIOUS

PDF

41.5 KB Created: 2020-08-31 23:54:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6630e3552c50e4ed9d94690aa2389f9 SHA-1: 94764385ee09aa936196d01148dc93eed14dfaad SHA-256: 7dfc2a44a717f67dfcc7cf1b7a889660e1e836667a475e2b312783520809b130
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/wix?keyword=majesty+2+battles+of+ardania+free, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious sites under the guise of providing free content, likely as part of a phishing or scam campaign.

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=majesty+2+battles+of+ardania+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/gebakarebowoluluvedatof.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/tejetikubafaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/zijuwonuvawupis.pdf
    • https://cdn.shopify.com/s/files/1/0434/8205/4813/files/manorama_year_book_2020_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/3d_female_model.pdf
    • https://cdn.shopify.com/s/files/1/0437/2217/8710/files/38533511718.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/16239605751.pdf
    • https://cdn.shopify.com/s/files/1/0438/2782/2749/files/77259308305.pdf
    • https://cdn.shopify.com/s/files/1/0448/6771/5234/files/mba_cet_result_date_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/palajixiziminazun.pdf
    • https://cdn.shopify.com/s/files/1/0449/5494/3647/files/67274245583.pdf
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/endocrine_society_vitamin_d_guidelines.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_off00006221.bin
0b2c14756a48b6df6f642ad0f9f658dcd26b850d6e86ba4825bbd2edd5da7dd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 5356 bytes
font_01_sfnt_off0000747e.bin
738a108110abb197c32da50c1a5c738dad7722c4f09d885e2976c09ab3b9c803
pdf-font-stream PDF embedded font (sfnt) at offset 0x747E 10912 bytes