Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed0b32fd5ea2658…

MALICIOUS

PDF

62.1 KB Created: 2020-08-28 15:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ee9d3c3e77d9fac7be35d8b43a2c2f7 SHA-1: 759dea780114df80aa8b62fe73ee7ad873b25a2c SHA-256: eed0b32fd5ea26583c925149f41b6cb845c918ecd6fc2daa633e27eef0863448
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Tale of kingdoms minecraft 1.7.10' and the malicious URL, suggesting a lure. The presence of numerous external PDF links, many hosted on 'cdn.shopify.com', indicates a link farm strategy. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=tale+of+kingdoms+minecraft+1.7.10
    • http://files.modernintlinc.com/uploads/1/3/0/7/130775528/soneto.pdf
    • http://files.lestatwrestling.com/uploads/1/3/1/8/131856158/beec9bb21.pdf
    • http://files.connectingmindfully.com/uploads/1/3/0/7/130739776/kikul.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/vaaste_movie_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0440/3098/4357/files/22992646793.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/search_engines_information_retrieval_in_practice_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0451/3703/5429/files/best_risk_management_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/napetapobagikiliboli.pdf
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/cebuano_language_objectives.pdf
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/photogrammetry_basics.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/xorotinixibeguxegebulolu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/firestone_weathergrip_review_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/53685589182.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1437/files/terowilijelemaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99744184538.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_off0000afee.bin
e2787c21aad3e1af71099bf35e55f6bf4c074187fe09da59a8884f194f01e421
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFEE 5660 bytes
font_01_sfnt_off0000c32f.bin
a6525ffaaf719c13bd6b8108948dac624f3a8f6597b89bdb2c720df4e917525a
pdf-font-stream PDF embedded font (sfnt) at offset 0xC32F 12080 bytes