Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a3148565d02c71…

MALICIOUS

PDF

68.6 KB Created: 2020-05-25 01:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 514f05585a67283d6f4e41f508c5f45c SHA-1: 71295e1e75a3bbc3a156f4e914f4ab8c182f3ec7 SHA-256: f3a3148565d02c71725ce16192efceabba54c14e1b72489d0835fa186b3bd03d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm designed to manipulate search engine results or to host further malicious content. The document body itself contains a reference to a specific URL and technical terms, likely as part of the SEO lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://klokkeraadgivning.com/uploads/1/3/0/6/130605492/130605492.html#realtek+rtl8811au+wireless+lan+802.1 PDF link annotation
    • http://vlankcanvas.net/uploads/1/3/1/0/131071076/1116592.pdfIn PDF document text
    • http://webdisk.harryssmokeshop.com/uploads/1/3/1/4/131437873/3d507b7351a2be.pdfIn PDF document text
    • http://landscapingfresno.org/uploads/1/3/0/5/130542977/fibetuparavux.pdfIn PDF document text
    • http://ipropertyconcierge.com/uploads/1/3/0/9/130968921/d263d7583ec.pdfIn PDF document text
    • http://ryanstead.com/uploads/1/3/1/3/131384396/2553864.pdfIn PDF document text
    • http://emporiumofsweets.net/uploads/1/3/0/7/130740547/dakadofopit-nuwuzazo-karatuponetiru-zilorow.pdfIn PDF document text
    • http://saco.taxi/uploads/1/3/0/4/130483576/5888553.pdfIn PDF document text
    • http://artonminicanvas.net/uploads/1/3/1/1/131163638/zajat_kugiwed.pdfIn PDF document text
    • http://ceasultrezirii.com/uploads/1/3/1/4/131409170/fepeweda-futok.pdfIn PDF document text
    • http://manjarazie.online/uploads/1/3/0/2/130289610/6213340.pdfIn PDF document text
    • http://cannisafe.com/uploads/1/3/0/5/130544413/dununozuteki.pdfIn PDF document text
    • http://liosndist33a.org/uploads/1/3/0/7/130776201/56d208fadb8f40.pdfIn PDF document text
    • http://intuitive-coaching.org/uploads/1/3/0/4/130476346/5a55759d4f16dd.pdfIn PDF document text
    • http://disior.co/uploads/1/3/0/5/130539492/finunerorera.pdfIn PDF document text
    • http://bienes-silverado.com/uploads/1/3/1/4/131437363/fijuretobaj.pdfIn PDF document text
    • http://frivboss.org/uploads/1/3/1/3/131384481/gozejeg.pdfIn PDF document text
    • http://mail.megamin.org/uploads/1/3/0/2/130287289/mevefejunaxameliz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 5

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_off0000d4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B4 3044 bytes
SHA-256: 2cba2f9f4f393170193347eda37d9310850d179a834b238a53bc3407fb6d5b17
font_01_sfnt_off0000df82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF82 11220 bytes
SHA-256: ba82f85437d80e27d05ec6184b59906e5ccbf709c3bacde5a595a4864154d3c2

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