Malicious PDF — malware analysis report

Static analysis result for SHA-256 05393a979ad8fd2d…

MALICIOUS

PDF

36.4 KB Created: 2020-08-09 16:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb75e5f0803511916c1c461015ca3d4d SHA-1: a19486d8467abbf6f8cbb2e56a9664c9ed7d9490 SHA-256: 05393a979ad8fd2de6d7b909e2d5876c6464a98a8ccf77b2602fd29f66862313
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation or to host malicious content. One critical heuristic identified a link to known malicious redirector infrastructure, which is a strong indicator of malicious intent. The document body, though heavily obfuscated, contains text related to the Bhagavad Gita and a URL that is also present in the heuristics, reinforcing the lure.

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.cc/pify?keyword=bhagavad+gita+as+it+is+pdf+by+prabhupada
    • http://jewekipuk.andyjohnsonpsychlab.com/uploads/1/3/1/6/131637814/a19ed989.pdf
    • http://files.thesummitplayhouse.org/uploads/1/3/1/8/131856491/6406855.pdf
    • http://sevuv.courtenaydore.com/uploads/1/3/0/8/130874493/pezidudoxuk.pdf
    • http://laziw.headtotinytoes.com/uploads/1/3/0/7/130775350/nifujuwesoxut_pekalazukomirow.pdf
    • http://nirujimi.chiropractic-now.com/uploads/1/3/0/8/130874655/4be666370.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6605/5063/files/wosinexex.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/kopopokunuvidomemoban.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/10632247461.pdf
    • https://cdn.shopify.com/s/files/1/0433/6209/1167/files/13901099355.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1041/files/21473797758.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdf
    • https://cdn.shopify.com/s/files/1/0436/5818/2809/files/teori_utilitarianisme_jeremy_bentham_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/3119/1975/files/35825200951.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/baseball_field_positions_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/55066422387.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/wawagupupebutanebu.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_off000050bd.bin
52997b043394bbdf93ed8c8ac03a545a92d58bc67b7d9f0fa59556f5009cc602		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50BD 5620 bytes
font_01_sfnt_off000063e9.bin
fb88ae0adccd6e6b67523b1434d0e6f6dc9d5b10068b0af0798e8bee199bd1ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E9 9664 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.