Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeabf49ab0babd0f…

MALICIOUS

PDF

35.1 KB Created: 2020-07-08 13:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 80af9842eb980a089d462e4b4f606b4d SHA-1: bea5eaef85b56083e20415a50d0da2f418c5968d SHA-256: aeabf49ab0babd0f6584f76db8a1a27756fc790bf248a70fb601fa9ce75133b3
192 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to host other PDFs. One of the primary links redirects to a known malicious domain, ttraff.com, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains references to the physics book lure and the malicious URLs. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=physics%20book%2011%20class%20pdf In PDF document text
    • http://files.shearserenitysalon.com/uploads/1/3/1/3/131383553/53b9878d6b0f11.pdfIn PDF document text
    • http://files.mr-stevens.com/uploads/1/3/0/7/130776864/zoxakaso.pdfIn PDF document text
    • http://files.sachagrosselart.com/uploads/1/3/0/9/130969209/belizifimekedaxuwuzu.pdfIn PDF document text
    • http://files.reikifortheplanet.com/uploads/1/3/2/3/132302815/5645773.pdfIn PDF document text
    • http://files.kimmomoilanen.com/uploads/1/3/0/7/130776567/bobav_gufifek_zarotoguvudomo.pdfIn PDF document text
    • http://files.lakemanorestates.com/uploads/1/3/2/7/132710575/8820505.pdfIn PDF document text
    • http://files.richlandiowa.com/uploads/1/3/0/9/130969278/nagesozum_tivoworosajavo_tojexokuropa.pdfIn PDF document text
    • http://files.localhoodnews.com/uploads/1/3/0/9/130969477/popuzefafer.pdfIn PDF document text
    • http://files.evelynpatriciaterry.com/uploads/1/3/1/3/131379395/6970682.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://mitokoru.files.wordpress.com/2020/06/jafosevexe.pdfIn PDF document text
    • https://zezumova.files.wordpress.com/2020/06/20227800798.pdfIn PDF document text
    • https://mudopepomof.files.wordpress.com/2020/06/99465669296.pdfIn PDF document text
    • https://zekirub.files.wordpress.com/2020/07/nufijefusejijizugemejip.pdfIn PDF document text
    • https://simupem.files.wordpress.com/2020/06/20894844940.pdfIn PDF document text
    • https://xilolak.files.wordpress.com/2020/06/87051170488.pdfIn PDF document text
    • https://lijopiwa.files.wordpress.com/2020/07/gunipelixasepetemoxevit.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D21 4988 bytes
SHA-256: f5746e39dbfd2f7205538d9cddb1ff36c36cbd1e1cb176c6e27b25b842399c0d
font_01_sfnt_off00005e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0D 9756 bytes
SHA-256: 34ef28990fb119777925e0b616611089d43e5944f5e8fca236860907cbb379ba

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