Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e5a7a3af487ff7…

MALICIOUS

PDF

69.7 KB Created: 2020-12-10 22:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 910c715ea198fb04766eb1e3652b1d9d SHA-1: 19153ebb40486e80848ae1df9e15cb285ac46114 SHA-256: 47e5a7a3af487ff73b19dd1b196812c02eab829d7b671ad42a2633e3e331bb6a
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://traffking.ru/strik?utm_term=bit+heroes+hack+no+human+verification', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bit heroes hack no human verification', suggesting a phishing or scam lure. The presence of numerous external PDF links, including one to a known benign URL, indicates a link farm strategy, likely to distribute malicious content or improve SEO for malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=bit+heroes+hack+no+human+verification In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f8a8f3808d87.pdfIn PDF document text
    • https://napepoxamugif.weebly.com/uploads/1/3/3/9/133997580/bafemabog_bogevawovivu.pdfIn PDF document text
    • https://libizewixowu.weebly.com/uploads/1/3/4/4/134432873/7812432.pdfIn PDF document text
    • https://zikegebuner.weebly.com/uploads/1/3/4/8/134856814/xavumorijubekonidat.pdfIn PDF document text
    • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/lumojefixanola_xumagetapami_waximukom_rozazobop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc643fc8139af037669918f/t/5fc7c5b468a3ad1e411ab141/1606927796683/rap_beat_maker_no_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd114c4b66d17947f70b98/1606226252867/damping_ratio_of_steel_beam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc785958c9e503d27aa33a1/t/5fd12bd626f57811effed8d9/1607543771373/paper._io_2_hack_code_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7aaed2122570d5803980a/t/5fc8dc8c46ef2e08cbc081f0/1606999181980/palazilujixinuzum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf52d3f8cdb769c6d98645/1606374100512/59487088720.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58b5a085bf90c0e1ca2e1/t/5fd0522528178304111f77fc/1607488039389/90569665889.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b818a13a450babffe01a/t/5fc75ca33ac9c763f4d68048/1606900899439/87818651066.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24B 5260 bytes
SHA-256: 36e0b0f0c51955c464edb182daa70e34a795dc5a5269567d5a51f56d4e01fae9
font_01_sfnt_off0000e410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE410 11000 bytes
SHA-256: 58f00bf5f0bc6b06a5b34824d2752551c8c5c25c3e99ebd1d97214a7ab224460

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