Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d603c57865de624…

MALICIOUS

PDF

35.2 KB Created: 2020-09-08 17:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0213129fd36a1edf2e5719b128e837bc SHA-1: 0a79489e16e8c1bf678301ce4ed9ad190f942a48 SHA-256: 7d603c57865de624b30b3b77074389efe686ad367c14f2b9023779b35834ec79
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely intended to lead the user to a malicious payload or phishing site. The document body and embedded URLs suggest a lure related to downloading an 'afan oromo bible apk'. The presence of numerous other PDF links further indicates a link farm or redirection scheme. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.club/wix?keyword=afan+oromo+bible+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/28855165039.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/3630459163.pdf
    • https://cdn.shopify.com/s/files/1/0448/9006/3003/files/cv_creator.pdf
    • https://static.usrfiles.com/ugd/19103d_e15d78157b2e4d5fbbab57c673561909.pdf
    • https://static.usrfiles.com/ugd/cc03df_64dfd368beea4be0b5376ae150915ca8.pdf
    • https://static.usrfiles.com/ugd/9904c2_d0436a8365024923ad708d25582d089c.pdf
    • https://static.usrfiles.com/ugd/368de4_a74cdf5d05894b55a6cfbf35b9f6a7e4.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_1c92690166c2465bbc80685c097d7e6f.pdf
    • https://static.usrfiles.com/ugd/19103d_eb8d5e5ab4424cb4a9ad41b4019add18.pdf
    • https://static.usrfiles.com/ugd/badafb_7ada32d95af34056b55155485a7b026f.pdf
    • https://cdn.shopify.com/s/files/1/0463/2566/1853/files/domuwulowas.pdf
    • https://cdn.shopify.com/s/files/1/0463/0085/6480/files/katig.pdf
    • https://cdn.shopify.com/s/files/1/0438/8411/8171/files/daffynition_decoder_algebra_with_pizzazz_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/77447458564.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_off00004bd9.bin
b26c27c2e55fc0bbe62760c33db4c54fea0cd02c07e4fdc97a5f1a8b674f721f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD9 5064 bytes
font_01_sfnt_off00005d00.bin
2716be35aa92a5e316c2c319234f99606242fff4f9bffdbb6c0b9c97dc4e5aa4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D00 10592 bytes