Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d63deda33d4893…

MALICIOUS

PDF

42.9 KB Created: 2020-03-11 03:43:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 11c440d50ceaed0062f4b526f902bb04 SHA-1: c6aad83e0261f4ec496ef9d559ff3fea5e85878c SHA-256: 33d63deda33d48938ce14c2e31a9a7a766b01503d3368dd3a9125f314b7267bc
94 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, also contains URLs. This suggests the primary purpose is to redirect users to a network of external sites, likely for SEO manipulation or to serve further malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.geobiologiabarcelona.es/uploads/1/3/0/5/130550993/130550993.html#software+test+plan+sample+pdf
    • http://www.luxurylodingbylaura.com/uploads/1/3/0/4/130476866/4360222.pdf
    • http://d-phoenix.net/uploads/1/3/0/5/130590678/5039871.pdf
    • http://shreveportpoolcleaners.com/uploads/1/3/0/8/130813305/vubigox-gikivim-gipunenexexak.pdf
    • http://mail.farmingtonvalleyanimalcontrol.com/uploads/1/3/0/3/130379114/c0d62689335d4.pdf
    • http://tihder.com/uploads/1/3/0/7/130775808/fawom.pdf
    • http://victorinscarriers.com/uploads/1/3/1/1/131164474/ziwofuwuponak.pdf
    • http://www.hintonartclub.ca/uploads/1/3/0/5/130546024/4022593.pdf
    • http://www.cosmetictattoostudio.com/uploads/1/3/0/7/130739362/aabb9e5be.pdf
    • http://retrocrawl.net/uploads/1/3/0/8/130813100/8978295.pdf
    • http://jeromedna.org/uploads/1/3/0/4/130478314/9b78314c75e8d.pdf
    • http://stout-mechanical-ok.com/uploads/1/3/0/6/130603745/gasefutotopigudalo.pdf
    • http://jccoach.com/uploads/1/3/0/5/130589362/regewadel.pdf
    • http://www.drsoni.co.uk/uploads/1/3/0/5/130540619/2410fc.pdf
    • http://integralwellness.com.au/uploads/1/3/0/5/130589400/falekitigisu-lolenuzojatexol-peladi-biwivudexa.pdf
    • http://www.moorestownlegendslax.com/uploads/1/3/0/4/130488498/pepij.pdf
    • http://appliedcleaningtechnologies.com/uploads/1/3/0/2/130289333/0b6dc3a902e.pdf
    • http://vickisuecreations.com/uploads/1/3/0/5/130544240/2836395.pdf
    • http://daveandjanelle.com/uploads/1/3/0/6/130605302/e0113de22614e.pdf
    • http://solidefitness.com/uploads/1/3/0/5/130539108/a1ddcd0934ad.pdf
    • http://momodepot.com/uploads/1/3/0/8/130814104/wijixunewi_sevisesekisesix.pdf
    • http://mycentralparkwest.com/uploads/1/3/0/6/130620846/6674859.pdf
    • http://auscorruption.exposed/uploads/1/3/0/2/130287302/wodimunazabinib.pdf
    • http://ndsportschannel.net/uploads/1/3/0/7/130774990/boris_wenugudarala_dedoze.pdf
    • http://ronaldmitchelletteandassociattes.com/uploads/1/3/0/5/130551754/zewadidon.pdf
    • http://ronaldmitchellet
    • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ecc.bin
91ce4e65208c73d8fff8944aab179fea0c9118b2992246dd628f396affd64a3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECC 8040 bytes

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