Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cfe17c1fbb21f84…

MALICIOUS

PDF

40.6 KB Created: 2020-08-24 20:10:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8de371a6cb88eeabe3861a3eb75c32a9 SHA-1: 8ce368f0af7bc62b1a2bcc39cd1d1b88b590da7a SHA-256: 0cfe17c1fbb21f84c89d294c08212dc1b21dfb020a2e259ecf44088f4d1bbd1b
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector infrastructure, identified as malicious. The document body, though partially corrupted, includes the same URL and a title suggesting a lure related to Netflix, indicating a phishing or scam attempt. The presence of numerous external links, many pointing to Shopify, suggests a link farm used to distribute malicious content or improve SEO for scam sites.

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=films+en+van+netflix+op+tablet
    • http://files.artworkmq.com/uploads/1/3/1/8/131856919/5901473.pdf
    • http://livep.kristamaysart.com/uploads/1/3/2/7/132740478/popivitetewepile.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/85353289970.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/lixuletifax.pdf
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/subtraction_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/astm_a106_pipe_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/mowimurixazokola.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/algebra_math_symbols_table.pdf
    • https://cdn.shopify.com/s/files/1/0448/6601/1298/files/list_of_digestive_enzymes_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/rokafevefogefevexezizugo.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_off000061ef.bin
96d68d5ad232220d65ce180f52f2edf6a6fea5559552c7af67587f4732e8c501
pdf-font-stream PDF embedded font (sfnt) at offset 0x61EF 5172 bytes
font_01_sfnt_off00007380.bin
aa4528e0c4f8108f9f49f25a0738e38aa3df10488964b57e83e17572a3215978
pdf-font-stream PDF embedded font (sfnt) at offset 0x7380 9968 bytes