Malicious PDF — malware analysis report

Static analysis result for SHA-256 7011bb9e117e0dc4…

MALICIOUS

PDF

40.9 KB Created: 2020-09-17 09:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe3b08e2c9d43b0b2d91977fc001096d SHA-1: 9b5512e8b5cb954b1a355e7cac30ec778eeb9ff2 SHA-256: 7011bb9e117e0dc4316dfa2618c4bc78231baed21545d4e22596bee34afe1b3f
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.me/wix?keyword=archery+king+hack+2019'. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or scam attempt. The presence of numerous PDF links, many pointing to external files, indicates a link farm strategy, likely to distribute malicious content or improve SEO for malicious 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.me/wix?keyword=archery+king+hack+2019
    • http://fedulur.thegymstruggle.com/uploads/1/3/0/9/130969060/3680169.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://afd29195-7c85-4396-b858-7b52cd8bd492.filesusr.com/ugd/8e7730_bbe440f868974b92a58f4c3fb6f31875.pdf?index=true
    • https://ef6fb857-832f-4e09-af2d-272bd66127df.filesusr.com/ugd/fedf23_7b4e48eaa4914da3a03043e73f61ffe1.pdf?index=true
    • https://4ce39f20-d89e-41fe-9fc5-d2a1fafaf190.filesusr.com/ugd/33a2e4_d6351a9f53d345d0813dcf085bcd79bd.pdf?index=true
    • https://7486d3e1-de64-471b-8d6f-789fd0e76f4d.filesusr.com/ugd/2072cd_e86214008f014e0f802abe18f95ac04d.pdf?index=true
    • https://9fae006e-d82e-4525-959d-c137157eed19.filesusr.com/ugd/5cd33b_4f9a3b8a8e4b4d27bb97db0bb14338f7.pdf?index=true
    • https://9bba3840-4777-425a-9fe0-e0f0fe643a13.filesusr.com/ugd/1b6cec_b31e636c49434025a55160c841d8d1c4.pdf?index=true
    • https://15049474-e902-4040-896d-ed5bb6e67dd0.filesusr.com/ugd/5a1791_219387000cf346bb9653874ca943990a.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/laing_o_rourke_annual_report_2015.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/jezitekafojamufif.pdf
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/95994041289.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_off00006021.bin
aaf759b94bff0da4b38b9a21d74ee63d1b587d44d48dd1980a351f9a3d9594db
pdf-font-stream PDF embedded font (sfnt) at offset 0x6021 5488 bytes
font_01_sfnt_off000072db.bin
19f3734594b0bbf61c87c669feec8435cdb97b132bf16c2911e2bd372457ce0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x72DB 10620 bytes